108=x^2+14x

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Solution for 108=x^2+14x equation:


Simplifying
108 = x2 + 14x

Reorder the terms:
108 = 14x + x2

Solving
108 = 14x + x2

Solving for variable 'x'.

Reorder the terms:
108 + -14x + -1x2 = 14x + -14x + x2 + -1x2

Combine like terms: 14x + -14x = 0
108 + -14x + -1x2 = 0 + x2 + -1x2
108 + -14x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
108 + -14x + -1x2 = 0

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

Divide each side by '-1'.
-108 + 14x + x2 = 0

Move the constant term to the right:

Add '108' to each side of the equation.
-108 + 14x + 108 + x2 = 0 + 108

Reorder the terms:
-108 + 108 + 14x + x2 = 0 + 108

Combine like terms: -108 + 108 = 0
0 + 14x + x2 = 0 + 108
14x + x2 = 0 + 108

Combine like terms: 0 + 108 = 108
14x + x2 = 108

The x term is 14x.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x + 49 + x2 = 108 + 49

Reorder the terms:
49 + 14x + x2 = 108 + 49

Combine like terms: 108 + 49 = 157
49 + 14x + x2 = 157

Factor a perfect square on the left side:
(x + 7)(x + 7) = 157

Calculate the square root of the right side: 12.529964086

Break this problem into two subproblems by setting 
(x + 7) equal to 12.529964086 and -12.529964086.

Subproblem 1

x + 7 = 12.529964086 Simplifying x + 7 = 12.529964086 Reorder the terms: 7 + x = 12.529964086 Solving 7 + x = 12.529964086 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 12.529964086 + -7 Combine like terms: 7 + -7 = 0 0 + x = 12.529964086 + -7 x = 12.529964086 + -7 Combine like terms: 12.529964086 + -7 = 5.529964086 x = 5.529964086 Simplifying x = 5.529964086

Subproblem 2

x + 7 = -12.529964086 Simplifying x + 7 = -12.529964086 Reorder the terms: 7 + x = -12.529964086 Solving 7 + x = -12.529964086 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -12.529964086 + -7 Combine like terms: 7 + -7 = 0 0 + x = -12.529964086 + -7 x = -12.529964086 + -7 Combine like terms: -12.529964086 + -7 = -19.529964086 x = -19.529964086 Simplifying x = -19.529964086

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.529964086, -19.529964086}

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