x^2+26x-23=0

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Solution for x^2+26x-23=0 equation:


Simplifying
x2 + 26x + -23 = 0

Reorder the terms:
-23 + 26x + x2 = 0

Solving
-23 + 26x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '23' to each side of the equation.
-23 + 26x + 23 + x2 = 0 + 23

Reorder the terms:
-23 + 23 + 26x + x2 = 0 + 23

Combine like terms: -23 + 23 = 0
0 + 26x + x2 = 0 + 23
26x + x2 = 0 + 23

Combine like terms: 0 + 23 = 23
26x + x2 = 23

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 = 23 + 169

Reorder the terms:
169 + 26x + x2 = 23 + 169

Combine like terms: 23 + 169 = 192
169 + 26x + x2 = 192

Factor a perfect square on the left side:
(x + 13)(x + 13) = 192

Calculate the square root of the right side: 13.856406461

Break this problem into two subproblems by setting 
(x + 13) equal to 13.856406461 and -13.856406461.

Subproblem 1

x + 13 = 13.856406461 Simplifying x + 13 = 13.856406461 Reorder the terms: 13 + x = 13.856406461 Solving 13 + x = 13.856406461 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 = 13.856406461 + -13 Combine like terms: 13 + -13 = 0 0 + x = 13.856406461 + -13 x = 13.856406461 + -13 Combine like terms: 13.856406461 + -13 = 0.856406461 x = 0.856406461 Simplifying x = 0.856406461

Subproblem 2

x + 13 = -13.856406461 Simplifying x + 13 = -13.856406461 Reorder the terms: 13 + x = -13.856406461 Solving 13 + x = -13.856406461 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 = -13.856406461 + -13 Combine like terms: 13 + -13 = 0 0 + x = -13.856406461 + -13 x = -13.856406461 + -13 Combine like terms: -13.856406461 + -13 = -26.856406461 x = -26.856406461 Simplifying x = -26.856406461

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.856406461, -26.856406461}

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