x^2+26x-118=0

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Solution for x^2+26x-118=0 equation:


Simplifying
x2 + 26x + -118 = 0

Reorder the terms:
-118 + 26x + x2 = 0

Solving
-118 + 26x + 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 + 26x + 118 + x2 = 0 + 118

Reorder the terms:
-118 + 118 + 26x + x2 = 0 + 118

Combine like terms: -118 + 118 = 0
0 + 26x + x2 = 0 + 118
26x + x2 = 0 + 118

Combine like terms: 0 + 118 = 118
26x + x2 = 118

The x term is 26x.  Take half its coefficient (13).
Square it (169) and add it to both sides.

Add '169' to each side of the equation.
26x + 169 + x2 = 118 + 169

Reorder the terms:
169 + 26x + x2 = 118 + 169

Combine like terms: 118 + 169 = 287
169 + 26x + x2 = 287

Factor a perfect square on the left side:
(x + 13)(x + 13) = 287

Calculate the square root of the right side: 16.941074346

Break this problem into two subproblems by setting 
(x + 13) equal to 16.941074346 and -16.941074346.

Subproblem 1

x + 13 = 16.941074346 Simplifying x + 13 = 16.941074346 Reorder the terms: 13 + x = 16.941074346 Solving 13 + x = 16.941074346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = 16.941074346 + -13 Combine like terms: 13 + -13 = 0 0 + x = 16.941074346 + -13 x = 16.941074346 + -13 Combine like terms: 16.941074346 + -13 = 3.941074346 x = 3.941074346 Simplifying x = 3.941074346

Subproblem 2

x + 13 = -16.941074346 Simplifying x + 13 = -16.941074346 Reorder the terms: 13 + x = -16.941074346 Solving 13 + x = -16.941074346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = -16.941074346 + -13 Combine like terms: 13 + -13 = 0 0 + x = -16.941074346 + -13 x = -16.941074346 + -13 Combine like terms: -16.941074346 + -13 = -29.941074346 x = -29.941074346 Simplifying x = -29.941074346

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.941074346, -29.941074346}

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