8x^2-36x=40

Simple and best practice solution for 8x^2-36x=40 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 8x^2-36x=40 equation:


Simplifying
8x2 + -36x = 40

Reorder the terms:
-36x + 8x2 = 40

Solving
-36x + 8x2 = 40

Solving for variable 'x'.

Reorder the terms:
-40 + -36x + 8x2 = 40 + -40

Combine like terms: 40 + -40 = 0
-40 + -36x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-10 + -9x + 2x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-10 + -9x + 2x2)' equal to zero and attempt to solve: Simplifying -10 + -9x + 2x2 = 0 Solving -10 + -9x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -5 + -4.5x + x2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + -4.5x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + -4.5x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -4.5x + x2 = 0 + 5 -4.5x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 -4.5x + x2 = 5 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = 5 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = 5 + 5.0625 Combine like terms: 5 + 5.0625 = 10.0625 5.0625 + -4.5x + x2 = 10.0625 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = 10.0625 Calculate the square root of the right side: 3.172144385 Break this problem into two subproblems by setting (x + -2.25) equal to 3.172144385 and -3.172144385.

Subproblem 1

x + -2.25 = 3.172144385 Simplifying x + -2.25 = 3.172144385 Reorder the terms: -2.25 + x = 3.172144385 Solving -2.25 + x = 3.172144385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 3.172144385 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 3.172144385 + 2.25 x = 3.172144385 + 2.25 Combine like terms: 3.172144385 + 2.25 = 5.422144385 x = 5.422144385 Simplifying x = 5.422144385

Subproblem 2

x + -2.25 = -3.172144385 Simplifying x + -2.25 = -3.172144385 Reorder the terms: -2.25 + x = -3.172144385 Solving -2.25 + x = -3.172144385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -3.172144385 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -3.172144385 + 2.25 x = -3.172144385 + 2.25 Combine like terms: -3.172144385 + 2.25 = -0.922144385 x = -0.922144385 Simplifying x = -0.922144385

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.422144385, -0.922144385}

Solution

x = {5.422144385, -0.922144385}

See similar equations:

| 4x+5(x+9)=90 | | 5.2=-x | | -2x(3+5)=16 | | 0.7+y= | | 0.7+you= | | 4m-4=4p | | 60/5(7-5 | | 7/5(30) | | 2mv=ab | | 6.42-10d=2.6 | | 7/5x=42 | | MV=2ab | | -4n+2=2n-10 | | 0.4-0.5x=2x+0.1 | | 1÷11/2 | | tan(x)=1.2 | | 3x+6*2=5x*2 | | 0.11y+0.06(y+3000)=1030 | | 5.2e+6*1= | | y+y=5(7)-(-9)-10 | | x^2+48x+100=0 | | -20/0 | | -8n-39=-3+20n-12 | | (V+16)(-5+-35v)=11 | | 4/5÷1/5 | | y^5-16y^4+52y^3=0 | | 1.62g-10=0.53 | | 2x-3=9-3x | | 4m+12=-18 | | 8(2n-3)-n=3(3n+2) | | 100-2x=5 | | (2w-3)/5=w/2 |

Equations solver categories