x^2-26x-4=0

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Solution for x^2-26x-4=0 equation:


Simplifying
x2 + -26x + -4 = 0

Reorder the terms:
-4 + -26x + x2 = 0

Solving
-4 + -26x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -26x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + -26x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -26x + x2 = 0 + 4
-26x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
-26x + x2 = 4

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 = 4 + 169

Reorder the terms:
169 + -26x + x2 = 4 + 169

Combine like terms: 4 + 169 = 173
169 + -26x + x2 = 173

Factor a perfect square on the left side:
(x + -13)(x + -13) = 173

Calculate the square root of the right side: 13.152946438

Break this problem into two subproblems by setting 
(x + -13) equal to 13.152946438 and -13.152946438.

Subproblem 1

x + -13 = 13.152946438 Simplifying x + -13 = 13.152946438 Reorder the terms: -13 + x = 13.152946438 Solving -13 + x = 13.152946438 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 = 13.152946438 + 13 Combine like terms: -13 + 13 = 0 0 + x = 13.152946438 + 13 x = 13.152946438 + 13 Combine like terms: 13.152946438 + 13 = 26.152946438 x = 26.152946438 Simplifying x = 26.152946438

Subproblem 2

x + -13 = -13.152946438 Simplifying x + -13 = -13.152946438 Reorder the terms: -13 + x = -13.152946438 Solving -13 + x = -13.152946438 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 = -13.152946438 + 13 Combine like terms: -13 + 13 = 0 0 + x = -13.152946438 + 13 x = -13.152946438 + 13 Combine like terms: -13.152946438 + 13 = -0.152946438 x = -0.152946438 Simplifying x = -0.152946438

Solution

The solution to the problem is based on the solutions from the subproblems. x = {26.152946438, -0.152946438}

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