x^2+6x-118=0

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Solution for x^2+6x-118=0 equation:


Simplifying
x2 + 6x + -118 = 0

Reorder the terms:
-118 + 6x + x2 = 0

Solving
-118 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '118' to each side of the equation.
-118 + 6x + 118 + x2 = 0 + 118

Reorder the terms:
-118 + 118 + 6x + x2 = 0 + 118

Combine like terms: -118 + 118 = 0
0 + 6x + x2 = 0 + 118
6x + x2 = 0 + 118

Combine like terms: 0 + 118 = 118
6x + x2 = 118

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 118 + 9

Reorder the terms:
9 + 6x + x2 = 118 + 9

Combine like terms: 118 + 9 = 127
9 + 6x + x2 = 127

Factor a perfect square on the left side:
(x + 3)(x + 3) = 127

Calculate the square root of the right side: 11.26942767

Break this problem into two subproblems by setting 
(x + 3) equal to 11.26942767 and -11.26942767.

Subproblem 1

x + 3 = 11.26942767 Simplifying x + 3 = 11.26942767 Reorder the terms: 3 + x = 11.26942767 Solving 3 + x = 11.26942767 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 11.26942767 + -3 Combine like terms: 3 + -3 = 0 0 + x = 11.26942767 + -3 x = 11.26942767 + -3 Combine like terms: 11.26942767 + -3 = 8.26942767 x = 8.26942767 Simplifying x = 8.26942767

Subproblem 2

x + 3 = -11.26942767 Simplifying x + 3 = -11.26942767 Reorder the terms: 3 + x = -11.26942767 Solving 3 + x = -11.26942767 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -11.26942767 + -3 Combine like terms: 3 + -3 = 0 0 + x = -11.26942767 + -3 x = -11.26942767 + -3 Combine like terms: -11.26942767 + -3 = -14.26942767 x = -14.26942767 Simplifying x = -14.26942767

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.26942767, -14.26942767}

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