x^2-8x+40=5x+32

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Solution for x^2-8x+40=5x+32 equation:


Simplifying
x2 + -8x + 40 = 5x + 32

Reorder the terms:
40 + -8x + x2 = 5x + 32

Reorder the terms:
40 + -8x + x2 = 32 + 5x

Solving
40 + -8x + x2 = 32 + 5x

Solving for variable 'x'.

Reorder the terms:
40 + -32 + -8x + -5x + x2 = 32 + 5x + -32 + -5x

Combine like terms: 40 + -32 = 8
8 + -8x + -5x + x2 = 32 + 5x + -32 + -5x

Combine like terms: -8x + -5x = -13x
8 + -13x + x2 = 32 + 5x + -32 + -5x

Reorder the terms:
8 + -13x + x2 = 32 + -32 + 5x + -5x

Combine like terms: 32 + -32 = 0
8 + -13x + x2 = 0 + 5x + -5x
8 + -13x + x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
8 + -13x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + -13x + -8 + x2 = 0 + -8

Reorder the terms:
8 + -8 + -13x + x2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -13x + x2 = 0 + -8
-13x + x2 = 0 + -8

Combine like terms: 0 + -8 = -8
-13x + x2 = -8

The x term is -13x.  Take half its coefficient (-6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
-13x + 42.25 + x2 = -8 + 42.25

Reorder the terms:
42.25 + -13x + x2 = -8 + 42.25

Combine like terms: -8 + 42.25 = 34.25
42.25 + -13x + x2 = 34.25

Factor a perfect square on the left side:
(x + -6.5)(x + -6.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(x + -6.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

x + -6.5 = 5.852349955 Simplifying x + -6.5 = 5.852349955 Reorder the terms: -6.5 + x = 5.852349955 Solving -6.5 + x = 5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + x = 5.852349955 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + x = 5.852349955 + 6.5 x = 5.852349955 + 6.5 Combine like terms: 5.852349955 + 6.5 = 12.352349955 x = 12.352349955 Simplifying x = 12.352349955

Subproblem 2

x + -6.5 = -5.852349955 Simplifying x + -6.5 = -5.852349955 Reorder the terms: -6.5 + x = -5.852349955 Solving -6.5 + x = -5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + x = -5.852349955 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + x = -5.852349955 + 6.5 x = -5.852349955 + 6.5 Combine like terms: -5.852349955 + 6.5 = 0.647650045 x = 0.647650045 Simplifying x = 0.647650045

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.352349955, 0.647650045}

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