112=x(x-5)

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Solution for 112=x(x-5) equation:


Simplifying
112 = x(x + -5)

Reorder the terms:
112 = x(-5 + x)
112 = (-5 * x + x * x)
112 = (-5x + x2)

Solving
112 = -5x + x2

Solving for variable 'x'.

Reorder the terms:
112 + 5x + -1x2 = -5x + 5x + x2 + -1x2

Combine like terms: -5x + 5x = 0
112 + 5x + -1x2 = 0 + x2 + -1x2
112 + 5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
112 + 5x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-112 + -5x + x2 = 0

Move the constant term to the right:

Add '112' to each side of the equation.
-112 + -5x + 112 + x2 = 0 + 112

Reorder the terms:
-112 + 112 + -5x + x2 = 0 + 112

Combine like terms: -112 + 112 = 0
0 + -5x + x2 = 0 + 112
-5x + x2 = 0 + 112

Combine like terms: 0 + 112 = 112
-5x + x2 = 112

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 112 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 112 + 6.25

Combine like terms: 112 + 6.25 = 118.25
6.25 + -5x + x2 = 118.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 118.25

Calculate the square root of the right side: 10.874281585

Break this problem into two subproblems by setting 
(x + -2.5) equal to 10.874281585 and -10.874281585.

Subproblem 1

x + -2.5 = 10.874281585 Simplifying x + -2.5 = 10.874281585 Reorder the terms: -2.5 + x = 10.874281585 Solving -2.5 + x = 10.874281585 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 10.874281585 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 10.874281585 + 2.5 x = 10.874281585 + 2.5 Combine like terms: 10.874281585 + 2.5 = 13.374281585 x = 13.374281585 Simplifying x = 13.374281585

Subproblem 2

x + -2.5 = -10.874281585 Simplifying x + -2.5 = -10.874281585 Reorder the terms: -2.5 + x = -10.874281585 Solving -2.5 + x = -10.874281585 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -10.874281585 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -10.874281585 + 2.5 x = -10.874281585 + 2.5 Combine like terms: -10.874281585 + 2.5 = -8.374281585 x = -8.374281585 Simplifying x = -8.374281585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.374281585, -8.374281585}

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