-8x(x-4)+5x-3=2(x-4)

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Solution for -8x(x-4)+5x-3=2(x-4) equation:


Simplifying
-8x(x + -4) + 5x + -3 = 2(x + -4)

Reorder the terms:
-8x(-4 + x) + 5x + -3 = 2(x + -4)
(-4 * -8x + x * -8x) + 5x + -3 = 2(x + -4)
(32x + -8x2) + 5x + -3 = 2(x + -4)

Reorder the terms:
-3 + 32x + 5x + -8x2 = 2(x + -4)

Combine like terms: 32x + 5x = 37x
-3 + 37x + -8x2 = 2(x + -4)

Reorder the terms:
-3 + 37x + -8x2 = 2(-4 + x)
-3 + 37x + -8x2 = (-4 * 2 + x * 2)
-3 + 37x + -8x2 = (-8 + 2x)

Solving
-3 + 37x + -8x2 = -8 + 2x

Solving for variable 'x'.

Reorder the terms:
-3 + 8 + 37x + -2x + -8x2 = -8 + 2x + 8 + -2x

Combine like terms: -3 + 8 = 5
5 + 37x + -2x + -8x2 = -8 + 2x + 8 + -2x

Combine like terms: 37x + -2x = 35x
5 + 35x + -8x2 = -8 + 2x + 8 + -2x

Reorder the terms:
5 + 35x + -8x2 = -8 + 8 + 2x + -2x

Combine like terms: -8 + 8 = 0
5 + 35x + -8x2 = 0 + 2x + -2x
5 + 35x + -8x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
5 + 35x + -8x2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-0.625 + -4.375x + x2 = 0

Move the constant term to the right:

Add '0.625' to each side of the equation.
-0.625 + -4.375x + 0.625 + x2 = 0 + 0.625

Reorder the terms:
-0.625 + 0.625 + -4.375x + x2 = 0 + 0.625

Combine like terms: -0.625 + 0.625 = 0.000
0.000 + -4.375x + x2 = 0 + 0.625
-4.375x + x2 = 0 + 0.625

Combine like terms: 0 + 0.625 = 0.625
-4.375x + x2 = 0.625

The x term is -4.375x.  Take half its coefficient (-2.1875).
Square it (4.78515625) and add it to both sides.

Add '4.78515625' to each side of the equation.
-4.375x + 4.78515625 + x2 = 0.625 + 4.78515625

Reorder the terms:
4.78515625 + -4.375x + x2 = 0.625 + 4.78515625

Combine like terms: 0.625 + 4.78515625 = 5.41015625
4.78515625 + -4.375x + x2 = 5.41015625

Factor a perfect square on the left side:
(x + -2.1875)(x + -2.1875) = 5.41015625

Calculate the square root of the right side: 2.325974258

Break this problem into two subproblems by setting 
(x + -2.1875) equal to 2.325974258 and -2.325974258.

Subproblem 1

x + -2.1875 = 2.325974258 Simplifying x + -2.1875 = 2.325974258 Reorder the terms: -2.1875 + x = 2.325974258 Solving -2.1875 + x = 2.325974258 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.1875' to each side of the equation. -2.1875 + 2.1875 + x = 2.325974258 + 2.1875 Combine like terms: -2.1875 + 2.1875 = 0.0000 0.0000 + x = 2.325974258 + 2.1875 x = 2.325974258 + 2.1875 Combine like terms: 2.325974258 + 2.1875 = 4.513474258 x = 4.513474258 Simplifying x = 4.513474258

Subproblem 2

x + -2.1875 = -2.325974258 Simplifying x + -2.1875 = -2.325974258 Reorder the terms: -2.1875 + x = -2.325974258 Solving -2.1875 + x = -2.325974258 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.1875' to each side of the equation. -2.1875 + 2.1875 + x = -2.325974258 + 2.1875 Combine like terms: -2.1875 + 2.1875 = 0.0000 0.0000 + x = -2.325974258 + 2.1875 x = -2.325974258 + 2.1875 Combine like terms: -2.325974258 + 2.1875 = -0.138474258 x = -0.138474258 Simplifying x = -0.138474258

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.513474258, -0.138474258}

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