x^2-26x-169=

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Solution for x^2-26x-169= equation:


Simplifying
x2 + -26x + -169 = 0

Reorder the terms:
-169 + -26x + x2 = 0

Solving
-169 + -26x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '169' to each side of the equation.
-169 + -26x + 169 + x2 = 0 + 169

Reorder the terms:
-169 + 169 + -26x + x2 = 0 + 169

Combine like terms: -169 + 169 = 0
0 + -26x + x2 = 0 + 169
-26x + x2 = 0 + 169

Combine like terms: 0 + 169 = 169
-26x + x2 = 169

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 = 169 + 169

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

Combine like terms: 169 + 169 = 338
169 + -26x + x2 = 338

Factor a perfect square on the left side:
(x + -13)(x + -13) = 338

Calculate the square root of the right side: 18.384776311

Break this problem into two subproblems by setting 
(x + -13) equal to 18.384776311 and -18.384776311.

Subproblem 1

x + -13 = 18.384776311 Simplifying x + -13 = 18.384776311 Reorder the terms: -13 + x = 18.384776311 Solving -13 + x = 18.384776311 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 = 18.384776311 + 13 Combine like terms: -13 + 13 = 0 0 + x = 18.384776311 + 13 x = 18.384776311 + 13 Combine like terms: 18.384776311 + 13 = 31.384776311 x = 31.384776311 Simplifying x = 31.384776311

Subproblem 2

x + -13 = -18.384776311 Simplifying x + -13 = -18.384776311 Reorder the terms: -13 + x = -18.384776311 Solving -13 + x = -18.384776311 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 = -18.384776311 + 13 Combine like terms: -13 + 13 = 0 0 + x = -18.384776311 + 13 x = -18.384776311 + 13 Combine like terms: -18.384776311 + 13 = -5.384776311 x = -5.384776311 Simplifying x = -5.384776311

Solution

The solution to the problem is based on the solutions from the subproblems. x = {31.384776311, -5.384776311}

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