x^2+26x=-145

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Solution for x^2+26x=-145 equation:


Simplifying
x2 + 26x = -145

Reorder the terms:
26x + x2 = -145

Solving
26x + x2 = -145

Solving for variable 'x'.

Reorder the terms:
145 + 26x + x2 = -145 + 145

Combine like terms: -145 + 145 = 0
145 + 26x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-145' to each side of the equation.
145 + 26x + -145 + x2 = 0 + -145

Reorder the terms:
145 + -145 + 26x + x2 = 0 + -145

Combine like terms: 145 + -145 = 0
0 + 26x + x2 = 0 + -145
26x + x2 = 0 + -145

Combine like terms: 0 + -145 = -145
26x + x2 = -145

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 = -145 + 169

Reorder the terms:
169 + 26x + x2 = -145 + 169

Combine like terms: -145 + 169 = 24
169 + 26x + x2 = 24

Factor a perfect square on the left side:
(x + 13)(x + 13) = 24

Calculate the square root of the right side: 4.898979486

Break this problem into two subproblems by setting 
(x + 13) equal to 4.898979486 and -4.898979486.

Subproblem 1

x + 13 = 4.898979486 Simplifying x + 13 = 4.898979486 Reorder the terms: 13 + x = 4.898979486 Solving 13 + x = 4.898979486 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 = 4.898979486 + -13 Combine like terms: 13 + -13 = 0 0 + x = 4.898979486 + -13 x = 4.898979486 + -13 Combine like terms: 4.898979486 + -13 = -8.101020514 x = -8.101020514 Simplifying x = -8.101020514

Subproblem 2

x + 13 = -4.898979486 Simplifying x + 13 = -4.898979486 Reorder the terms: 13 + x = -4.898979486 Solving 13 + x = -4.898979486 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 = -4.898979486 + -13 Combine like terms: 13 + -13 = 0 0 + x = -4.898979486 + -13 x = -4.898979486 + -13 Combine like terms: -4.898979486 + -13 = -17.898979486 x = -17.898979486 Simplifying x = -17.898979486

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-8.101020514, -17.898979486}

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