(2x-9)(x-5)=108

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Solution for (2x-9)(x-5)=108 equation:


Simplifying
(2x + -9)(x + -5) = 108

Reorder the terms:
(-9 + 2x)(x + -5) = 108

Reorder the terms:
(-9 + 2x)(-5 + x) = 108

Multiply (-9 + 2x) * (-5 + x)
(-9(-5 + x) + 2x * (-5 + x)) = 108
((-5 * -9 + x * -9) + 2x * (-5 + x)) = 108
((45 + -9x) + 2x * (-5 + x)) = 108
(45 + -9x + (-5 * 2x + x * 2x)) = 108
(45 + -9x + (-10x + 2x2)) = 108

Combine like terms: -9x + -10x = -19x
(45 + -19x + 2x2) = 108

Solving
45 + -19x + 2x2 = 108

Solving for variable 'x'.

Reorder the terms:
45 + -108 + -19x + 2x2 = 108 + -108

Combine like terms: 45 + -108 = -63
-63 + -19x + 2x2 = 108 + -108

Combine like terms: 108 + -108 = 0
-63 + -19x + 2x2 = 0

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

Divide each side by '2'.
-31.5 + -9.5x + x2 = 0

Move the constant term to the right:

Add '31.5' to each side of the equation.
-31.5 + -9.5x + 31.5 + x2 = 0 + 31.5

Reorder the terms:
-31.5 + 31.5 + -9.5x + x2 = 0 + 31.5

Combine like terms: -31.5 + 31.5 = 0.0
0.0 + -9.5x + x2 = 0 + 31.5
-9.5x + x2 = 0 + 31.5

Combine like terms: 0 + 31.5 = 31.5
-9.5x + x2 = 31.5

The x term is -9.5x.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5x + 22.5625 + x2 = 31.5 + 22.5625

Reorder the terms:
22.5625 + -9.5x + x2 = 31.5 + 22.5625

Combine like terms: 31.5 + 22.5625 = 54.0625
22.5625 + -9.5x + x2 = 54.0625

Factor a perfect square on the left side:
(x + -4.75)(x + -4.75) = 54.0625

Calculate the square root of the right side: 7.352720585

Break this problem into two subproblems by setting 
(x + -4.75) equal to 7.352720585 and -7.352720585.

Subproblem 1

x + -4.75 = 7.352720585 Simplifying x + -4.75 = 7.352720585 Reorder the terms: -4.75 + x = 7.352720585 Solving -4.75 + x = 7.352720585 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = 7.352720585 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = 7.352720585 + 4.75 x = 7.352720585 + 4.75 Combine like terms: 7.352720585 + 4.75 = 12.102720585 x = 12.102720585 Simplifying x = 12.102720585

Subproblem 2

x + -4.75 = -7.352720585 Simplifying x + -4.75 = -7.352720585 Reorder the terms: -4.75 + x = -7.352720585 Solving -4.75 + x = -7.352720585 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = -7.352720585 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = -7.352720585 + 4.75 x = -7.352720585 + 4.75 Combine like terms: -7.352720585 + 4.75 = -2.602720585 x = -2.602720585 Simplifying x = -2.602720585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.102720585, -2.602720585}

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