x^2-8x+4x-32=20

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Solution for x^2-8x+4x-32=20 equation:


Simplifying
x2 + -8x + 4x + -32 = 20

Reorder the terms:
-32 + -8x + 4x + x2 = 20

Combine like terms: -8x + 4x = -4x
-32 + -4x + x2 = 20

Solving
-32 + -4x + x2 = 20

Solving for variable 'x'.

Reorder the terms:
-32 + -20 + -4x + x2 = 20 + -20

Combine like terms: -32 + -20 = -52
-52 + -4x + x2 = 20 + -20

Combine like terms: 20 + -20 = 0
-52 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '52' to each side of the equation.
-52 + -4x + 52 + x2 = 0 + 52

Reorder the terms:
-52 + 52 + -4x + x2 = 0 + 52

Combine like terms: -52 + 52 = 0
0 + -4x + x2 = 0 + 52
-4x + x2 = 0 + 52

Combine like terms: 0 + 52 = 52
-4x + x2 = 52

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 52 + 4

Reorder the terms:
4 + -4x + x2 = 52 + 4

Combine like terms: 52 + 4 = 56
4 + -4x + x2 = 56

Factor a perfect square on the left side:
(x + -2)(x + -2) = 56

Calculate the square root of the right side: 7.483314774

Break this problem into two subproblems by setting 
(x + -2) equal to 7.483314774 and -7.483314774.

Subproblem 1

x + -2 = 7.483314774 Simplifying x + -2 = 7.483314774 Reorder the terms: -2 + x = 7.483314774 Solving -2 + x = 7.483314774 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 7.483314774 + 2 Combine like terms: -2 + 2 = 0 0 + x = 7.483314774 + 2 x = 7.483314774 + 2 Combine like terms: 7.483314774 + 2 = 9.483314774 x = 9.483314774 Simplifying x = 9.483314774

Subproblem 2

x + -2 = -7.483314774 Simplifying x + -2 = -7.483314774 Reorder the terms: -2 + x = -7.483314774 Solving -2 + x = -7.483314774 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -7.483314774 + 2 Combine like terms: -2 + 2 = 0 0 + x = -7.483314774 + 2 x = -7.483314774 + 2 Combine like terms: -7.483314774 + 2 = -5.483314774 x = -5.483314774 Simplifying x = -5.483314774

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.483314774, -5.483314774}

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