112=X(5+X)

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Solution for 112=X(5+X) equation:


Simplifying
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 = 8.374281585 X = 8.374281585 Simplifying X = 8.374281585

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 = -13.374281585 X = -13.374281585 Simplifying X = -13.374281585

Solution

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

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