Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.Key Takeaways. Triple-leveraged (3x) exchange-traded funds (ETFs) come with considerable risk and are not appropriate for long-term investing. Compounding can cause large losses for 3x ETFs during ...Algebra. Simplify (3x)^2. (3x)2 ( 3 x) 2. Apply the product rule to 3x 3 x. 32x2 3 2 x 2. Raise 3 3 to the power of 2 2. 9x2 9 x 2.3X VPN provides the fastest VPN server for you with the smart connection algorithm. All you need to do is just one tap. Features: FREE & Unlimited. ★ Unlimited Fast Speed. ★ Unlimited Use Time. ★ No Credit Card Required. ★ Free Forever. ★ Large number of servers, high-speed bandwidth.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Solve an equation, inequality or a system. Example: 2x-1=y,2y+3=x. 1: 2: 3: 4: 5: 6: 7: 8: 9: 0., < > ≤: ≥ ^ √: ⬅: : F _ ÷ | (* / ⌫ A: ↻: x: y = +-GGet the latest Direxion Daily Small Cap Bull 3X ETF (TNA) real-time quote, historical performance, charts, and other financial information to help you make more informed trading and investment ...The sum of 3x plus 2 and -4 plus 3 is 3x+1 if the equation is (3x+2)+(-4+3). If they are two separate questions, 3x+2 remains as itself while -4+3=-1. What are the factors of the expression below 9x2 plus 6x plus 1?3X VPN provides the fastest VPN server for you with the smart connection algorithm. All you need to do is just one tap. Features: FREE & Unlimited. ★ Unlimited Fast Speed. ★ Unlimited Use Time. ★ No Credit Card Required. ★ Free Forever. ★ Large number of servers, high-speed bandwidth.How do you solve 3x + 6 = 5 ? x= −31 Explanation: Step 1) Subtract 6 from each side of the equation to isolate the x term and keep the equation balanced: 3x+6 −6 = 5−6 ... How do I solve 3x + 6 = 9 ? x= 1 Explanation: First of all I will use the shortcuts. After that I will show what is actually happening. This will help in all sorts of ways.Evaluating Expressions Algebra Calculator can evaluate expressions that contain the variable x. To evaluate an expression containing x, enter the expression you want to evaluate, followed by the @ sign and the value you want to plug in for x. For example the command 2x @ 3 evaluates the expression 2x for x=3, which is equal to 2*3 or 6. Algebra. Multiply 3x*3x. 3x ⋅ 3x 3 x ⋅ 3 x. Rewrite using the commutative property of multiplication. 3⋅3x⋅x 3 ⋅ 3 x ⋅ x. Multiply x x by x x by adding the exponents. Tap for more steps... 3⋅3x2 3 ⋅ 3 x 2. Multiply 3 3 by 3 3.We would like to show you a description here but the site won’t allow us.3x-2. en. Related Symbolab blog posts. High School Math Solutions – Quadratic Equations Calculator, Part 1. A quadratic equation is a second degree polynomial ...3x+1. Share. Copy. Copied to clipboard. 3x^{1-1} The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0 ...Jul 24, 2018 · 3X 2018 2h YOUR RATING Rate Drama A stripper, janitor and lawyer are found dead in a shopping mall and a crazed religious fanatic is behind it all. Find out why and how this went down in 3X. Directors Logan Bennett Leigh Takata Writer Leigh Takata Stars Ingrid Jordan Leigh Takata Trionna Moore See production, box office & company info Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.3X VPN تطبيق لا يتطلب أي إعدادات معقدة. مع هذا التطبيق، سيكون بإمكانك تصفح الإنترنت بكل حرية مع حماية معطياتك من الأطراف الثالثة. لذا، وإذا كنت تبحث عن طريقة متميزة من أجل تصفح الإنترنت بكل حرية ...3x+1=0 One solution was found : x = -1/3 = -0.333 Step by step solution : Step 1 :Solving a Single Variable Equation : 1.1 Solve : 3x+1 = 0 Subtract 1 from both ... A student claims that the inequality 3x + 1>0 is always true because multiplying a number by 3 and then adding 1 to the result always produces a number greater than 0.In mathematics, a polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables. An example of a polynomial of a single indeterminate x is x² − 4x + 7. An example with three indeterminates is x³ + 2xyz² − yz + 1.Algebra. Graph y=3x. y = 3x y = 3 x. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,0) ( 0, 0) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.Algebra. Simplify 3x+6. 3x + 6 3 x + 6. Nothing further can be done with this topic. Please check the expression entered or try another topic. 3x+6 3 x + 6.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Totally re-designed with a wide 91° field of view and 3X optical zoom. Featuring a USB 2.0 video connection, this conference camera is ideal for virtually any meeting software used in a small to medium-sized room. Also featuring a built-in audio option.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Algebra. Graph y=3x-4. y = 3x − 4 y = 3 x - 4. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,−4) ( 0, - 4) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.how do you solve 3(4x − 15) = 19 ? x= 316 Explanation: 3(4x−15)= 19 Expand the parenthesis on the left side of the equation by multiplying all terms inside of ... 3x-4=-13 One solution was found : x = -3 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ... 3x-4=-17 One ...Leveraged 3X ETF List. Leveraged 3X ETFs are funds that track a wide variety of asset classes, such as stocks, bonds and commodity futures, and apply leverage in order to gain three times the daily or monthly return of the respective underlying index. Such ETFs come in the long and short varieties.3X VPN تطبيق لا يتطلب أي إعدادات معقدة. مع هذا التطبيق، سيكون بإمكانك تصفح الإنترنت بكل حرية مع حماية معطياتك من الأطراف الثالثة. لذا، وإذا كنت تبحث عن طريقة متميزة من أجل تصفح الإنترنت بكل حرية ...How do you solve 3x + 6 = 5 ? x= −31 Explanation: Step 1) Subtract 6 from each side of the equation to isolate the x term and keep the equation balanced: 3x+6 −6 = 5−6 ... How do I solve 3x + 6 = 9 ? x= 1 Explanation: First of all I will use the shortcuts. After that I will show what is actually happening. This will help in all sorts of ways.Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.3x-3=0 One solution was found : x = 1 Step by step solution : Step 1 :Pulling out like terms : 1.1 Pull out like factors : 3x - 3 = 3 • (x - 1) Equation at the end ... 3x-3=6 One solution was found : x = 3 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ...3x+5. Share. Copy. Copied to clipboard. 3x^{1-1} The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0 ...Find the terms. In general, the consecutive terms can differ by any number, say d, instead of just 1. So, the three numbers are better represented as x−d,x, and x+d. Then, 3x= 18 ⇒ x= 6 and x(x2 −d2)= 120 ... Let G(z) be the exponential generating function defining G(z) = ∑n=0∞ C n n!zn. The recurrence equation C n+2 = xC n +nC n−1 ...FEC FORM 3X Rev. 05/2016 Office Use Only NOTE: Submission of false, erroneous, or incomplete information may subject the person signing this Report to the penalties of 52 U.S.C. § 30109. 4. TYPE OF REPORT Report (Choose One) (a) Quarterly Reports: 12-Day Primary (12P) General (12G) Runoff (12R) PRE-Election3x+1. Share. Copy. Copied to clipboard. 3x^{1-1} The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0 ...Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Solve an equation, inequality or a system. Example: 2x-1=y,2y+3=x Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.Get the latest Direxion Daily Small Cap Bull 3X ETF (TNA) real-time quote, historical performance, charts, and other financial information to help you make more informed trading and investment ...y = − 4 3x y = - 4 3 x. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: − 4 3 - 4 3. y-intercept: (0,0) ( 0, 0) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.how do you solve 3(4x − 15) = 19 ? x= 316 Explanation: 3(4x−15)= 19 Expand the parenthesis on the left side of the equation by multiplying all terms inside of ... 3x-4=-13 One solution was found : x = -3 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ... 3x-4=-17 One ...We would like to show you a description here but the site won’t allow us.Explore/Expand/Extract. It’s been a while since I’ve written on 3X, so here’s the basics. As an idea/product/company grows, value-maximizing behavior changes dramatically. Explore — to ...Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Mon Amour Toujours is pleased to introduce you to 3X Doll. Don't let the 3X Doll price fool you! Each one is beautiful and of superior quality. I'm sure…Algebra. Graph y=3x-13. y = 3x − 13 y = 3 x - 13. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,−13) ( 0, - 13) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.FEC FORM 3X Rev. 05/2016 Office Use Only NOTE: Submission of false, erroneous, or incomplete information may subject the person signing this Report to the penalties of 52 U.S.C. § 30109. 4. TYPE OF REPORT Report (Choose One) (a) Quarterly Reports: 12-Day Primary (12P) General (12G) Runoff (12R) PRE-Election6x = 3x - 21; next we just subtract 3x from both sides. -3x -3x. 3x = -21. Finally, we divide 3 from both sides to separate the three from the x. x = -7.SPXL. SPXS. The Direxion Daily S&P 500® Bull and Bear 3X Shares seek daily investment results, before fees and expenses, of 300%, or 300% of the inverse (or opposite), of the performance of the S&P 500® Index. There is no guarantee the funds will meet their stated investment objectives.Algebra. Graph y=3x-6. y = 3x − 6 y = 3 x - 6. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,−6) ( 0, - 6) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.They are more expensive than traditional ETFs due to the use of leverage and the need for constant trading to maintain their positions. Ticker. Company Name. Last Price. 1-Year Return. GUSH. Direxion Daily S&P Oil & Gas Exploration & Production Bull 3x Shares. $39.23.The Direxion Daily S&P 500 Bull 3x Shares (NYSEARCA: SPXL), trading under the ticker SPXL, seeks daily investment results of 300% of the performance of the S&P 500 Index.Popular Problems. Algebra. Solve for x 3x=6. 3x = 6 3 x = 6. Divide each term in 3x = 6 3 x = 6 by 3 3. 3x 3 = 6 3 3 x 3 = 6 3. Simplify the left side. Tap for more steps... x = 6 3 x = 6 3.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Jul 24, 2018 · 3X 2018 2h YOUR RATING Rate Drama A stripper, janitor and lawyer are found dead in a shopping mall and a crazed religious fanatic is behind it all. Find out why and how this went down in 3X. Directors Logan Bennett Leigh Takata Writer Leigh Takata Stars Ingrid Jordan Leigh Takata Trionna Moore See production, box office & company info 3x-8=y Geometric figure: Straight Line Slope = 3 x-intercept = 8/3 = 2.66667 y-intercept = 8/-1 = -8.00000 Rearrange: Rearrange the equation by subtracting what is to the right of the ... x-8y=3 Geometric figure: Straight Line Slope = 0.250/2.000 = 0.125 x-intercept = 3/1 = 3.00000 y-intercept = 3/-8 = -0.37500 Rearrange: Rearrange the equation ...GitHub - MHSanaei/3x-ui: Xray panel supporting multi-protocol ...How do you solve 3x + 6 = 5 ? x= −31 Explanation: Step 1) Subtract 6 from each side of the equation to isolate the x term and keep the equation balanced: 3x+6 −6 = 5−6 ... How do I solve 3x + 6 = 9 ? x= 1 Explanation: First of all I will use the shortcuts. After that I will show what is actually happening. This will help in all sorts of ways.3x-2. en. Related Symbolab blog posts. High School Math Solutions – Quadratic Equations Calculator, Part 1. A quadratic equation is a second degree polynomial ...y = − 4 3x y = - 4 3 x. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: − 4 3 - 4 3. y-intercept: (0,0) ( 0, 0) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.The sum of 3x plus 2 and -4 plus 3 is 3x+1 if the equation is (3x+2)+(-4+3). If they are two separate questions, 3x+2 remains as itself while -4+3=-1. What are the factors of the expression below 9x2 plus 6x plus 1?Algebra. Solve for x 3x=27. 3x = 27 3 x = 27. Divide each term in 3x = 27 3 x = 27 by 3 3. 3x 3 = 27 3 3 x 3 = 27 3. Simplify the left side. Tap for more steps... x = 27 3 x = 27 3. Simplify the right side.Algebra. Solve for x 3x=7. 3x = 7 3 x = 7. Divide each term in 3x = 7 3 x = 7 by 3 3. 3x 3 = 7 3 3 x 3 = 7 3. Simplify the left side. Tap for more steps... x = 7 3 x = 7 3. The result can be shown in multiple forms.Totally re-designed with a wide 91° field of view and 3X optical zoom. Featuring a USB 2.0 video connection, this conference camera is ideal for virtually any meeting software used in a small to medium-sized room. Also featuring a built-in audio option.3x-9=0 One solution was found : x = 3 Step by step solution : Step 1 :Pulling out like terms : 1.1 Pull out like factors : 3x - 9 = 3 • (x - 3) Equation at the end ... 3x≤21 One solution was found : x ≤ 7 Rearrange: Rearrange the equation by subtracting what is to the right of the less equal sign from both sides of the inequality : ...Explore/Expand/Extract. It’s been a while since I’ve written on 3X, so here’s the basics. As an idea/product/company grows, value-maximizing behavior changes dramatically. Explore — to ...Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Simplify the right side. Tap for more steps... x = −13 x = - 13 FEC FORM 3X Rev. 05/2016 Office Use Only NOTE: Submission of false, erroneous, or incomplete information may subject the person signing this Report to the penalties of 52 U.S.C. § 30109. 4. TYPE OF REPORT Report (Choose One) (a) Quarterly Reports: 12-Day Primary (12P) General (12G) Runoff (12R) PRE-ElectionAlgebra. Simplify (3x)/x. 3x x 3 x x. Cancel the common factor. 3x x 3 x x. Divide 3 3 by 1 1.Mon Amour Toujours is pleased to introduce you to 3X Doll. Don't let the 3X Doll price fool you! Each one is beautiful and of superior quality. I'm sure…Given Expression: 3x + 2 - 3x + 7 + 5x. we need to simply the given expression and find the coefficient in the simplified expression. First we group the like term, we get. 3x - 3x + 5x + 2 + 7. Now solve like term, = ( 3x - 3x + 5x ) + ( 2 + 7 ) = 5x + 9. Constant Coefficient of x = 5. and Coefficient of 9 = 9Popular Problems. Algebra. Solve for x 3x=6. 3x = 6 3 x = 6. Divide each term in 3x = 6 3 x = 6 by 3 3. 3x 3 = 6 3 3 x 3 = 6 3. Simplify the left side. Tap for more steps... x = 6 3 x = 6 3.Linear Equation 3x+2 = 17 Similar Problems from Web Search 3x + 2 = 17 https://www.tiger-algebra.com/drill/3x_2=17/ 3x+2=17 One solution was found : x = 5 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ... 3(x + 2) = 12 http://www.tiger-algebra.com/drill/3 (x_2)=12/ Algebra. Graph y=3x+2. y = 3x + 2 y = 3 x + 2. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,2) ( 0, 2) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.3x+1 x 1 (mod 2) x 2 x 0 (mod 2); the conjecture states that for each m 2 ZZ+, there is a k 2 ZZ+ such that C(k)(m) = 1, that is, any positive integer will eventually iterate to 1. Note that an odd number m iterates to 3m +1 which then iterates to (3m +1)=2. One may therefore \compress" the dynamics by considering the map T(x) = 8 <: 3x+1 2 x 1 ...Get the latest Direxion Daily Small Cap Bull 3X ETF (TNA) real-time quote, historical performance, charts, and other financial information to help you make more informed trading and investment ...3X VPN تطبيق لا يتطلب أي إعدادات معقدة. مع هذا التطبيق، سيكون بإمكانك تصفح الإنترنت بكل حرية مع حماية معطياتك من الأطراف الثالثة. لذا، وإذا كنت تبحث عن طريقة متميزة من أجل تصفح الإنترنت بكل حرية ...3X VPN provides the fastest VPN server for you with the smart connection algorithm. All you need to do is just one tap. Features: FREE & Unlimited. ★ Unlimited Fast Speed. ★ Unlimited Use Time. ★ No Credit Card Required. ★ Free Forever. ★ Large number of servers, high-speed bandwidth.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Algebra. Simplify (3x)^2. (3x)2 ( 3 x) 2. Apply the product rule to 3x 3 x. 32x2 3 2 x 2. Raise 3 3 to the power of 2 2. 9x2 9 x 2.3x-9=0 One solution was found : x = 3 Step by step solution : Step 1 :Pulling out like terms : 1.1 Pull out like factors : 3x - 9 = 3 • (x - 3) Equation at the end ... 3x≤21 One solution was found : x ≤ 7 Rearrange: Rearrange the equation by subtracting what is to the right of the less equal sign from both sides of the inequality : ...
Algebra. Graph y=3x-13. y = 3x − 13 y = 3 x - 13. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,−13) ( 0, - 13) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.. Contact atandt wireless support
3x-3=0 One solution was found : x = 1 Step by step solution : Step 1 :Pulling out like terms : 1.1 Pull out like factors : 3x - 3 = 3 • (x - 1) Equation at the end ... 3x-3=6 One solution was found : x = 3 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ...Algebra. Solve for x 3x=5. 3x = 5 3 x = 5. Divide each term in 3x = 5 3 x = 5 by 3 3. 3x 3 = 5 3 3 x 3 = 5 3. Simplify the left side. Tap for more steps... x = 5 3 x = 5 3. The result can be shown in multiple forms.In the garage and on the road, the Beauer 3X looks just like a classic teardrop trailer, measuring 8.5 x 6 x 8.5 ft (2.6 x 1.85 x 2.6 m, body L x W x H, not including hitch in length).3x-2. en. Related Symbolab blog posts. High School Math Solutions – Quadratic Equations Calculator, Part 1. A quadratic equation is a second degree polynomial ...They are more expensive than traditional ETFs due to the use of leverage and the need for constant trading to maintain their positions. Ticker. Company Name. Last Price. 1-Year Return. GUSH. Direxion Daily S&P Oil & Gas Exploration & Production Bull 3x Shares. $39.23.3x-3=0 One solution was found : x = 1 Step by step solution : Step 1 :Pulling out like terms : 1.1 Pull out like factors : 3x - 3 = 3 • (x - 1) Equation at the end ... 3x-3=6 One solution was found : x = 3 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ...Algebra. Simplify (3x)^2. (3x)2 ( 3 x) 2. Apply the product rule to 3x 3 x. 32x2 3 2 x 2. Raise 3 3 to the power of 2 2. 9x2 9 x 2.How do you solve 3x + 6 = 5 ? x= −31 Explanation: Step 1) Subtract 6 from each side of the equation to isolate the x term and keep the equation balanced: 3x+6 −6 = 5−6 ... How do I solve 3x + 6 = 9 ? x= 1 Explanation: First of all I will use the shortcuts. After that I will show what is actually happening. This will help in all sorts of ways.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Algebra. Graph y=3x. y = 3x y = 3 x. Use the slope-intercept form to find the slope and y-intercept. Tap for more steps... Slope: 3 3. y-intercept: (0,0) ( 0, 0) Any line can be graphed using two points. Select two x x values, and plug them into the equation to find the corresponding y y values.3x-8=y Geometric figure: Straight Line Slope = 3 x-intercept = 8/3 = 2.66667 y-intercept = 8/-1 = -8.00000 Rearrange: Rearrange the equation by subtracting what is to the right of the ... x-8y=3 Geometric figure: Straight Line Slope = 0.250/2.000 = 0.125 x-intercept = 3/1 = 3.00000 y-intercept = 3/-8 = -0.37500 Rearrange: Rearrange the equation ...Explore/Expand/Extract. It’s been a while since I’ve written on 3X, so here’s the basics. As an idea/product/company grows, value-maximizing behavior changes dramatically. Explore — to ...Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.3x-3=0 One solution was found : x = 1 Step by step solution : Step 1 :Pulling out like terms : 1.1 Pull out like factors : 3x - 3 = 3 • (x - 1) Equation at the end ... 3x-3=6 One solution was found : x = 3 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ...Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Cos 3X Formula Derivation. To derive the formula of cos 3x, we can write the formula as cos (2x + x) . Hence, we can use the sum formula and double angle identity to get the desired equation. Cos 3x = cos ( 2x + x) = cos 2x cos x - sin 2x sin x (Sum formula for cosine) = ( 1- 2 sin² x ) cos x - 2sin²x cos x ( double-angle identity).