x^2-26x-45=0

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Solution for x^2-26x-45=0 equation:


Simplifying
x2 + -26x + -45 = 0

Reorder the terms:
-45 + -26x + x2 = 0

Solving
-45 + -26x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '45' to each side of the equation.
-45 + -26x + 45 + x2 = 0 + 45

Reorder the terms:
-45 + 45 + -26x + x2 = 0 + 45

Combine like terms: -45 + 45 = 0
0 + -26x + x2 = 0 + 45
-26x + x2 = 0 + 45

Combine like terms: 0 + 45 = 45
-26x + x2 = 45

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 = 45 + 169

Reorder the terms:
169 + -26x + x2 = 45 + 169

Combine like terms: 45 + 169 = 214
169 + -26x + x2 = 214

Factor a perfect square on the left side:
(x + -13)(x + -13) = 214

Calculate the square root of the right side: 14.628738838

Break this problem into two subproblems by setting 
(x + -13) equal to 14.628738838 and -14.628738838.

Subproblem 1

x + -13 = 14.628738838 Simplifying x + -13 = 14.628738838 Reorder the terms: -13 + x = 14.628738838 Solving -13 + x = 14.628738838 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 = 14.628738838 + 13 Combine like terms: -13 + 13 = 0 0 + x = 14.628738838 + 13 x = 14.628738838 + 13 Combine like terms: 14.628738838 + 13 = 27.628738838 x = 27.628738838 Simplifying x = 27.628738838

Subproblem 2

x + -13 = -14.628738838 Simplifying x + -13 = -14.628738838 Reorder the terms: -13 + x = -14.628738838 Solving -13 + x = -14.628738838 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 = -14.628738838 + 13 Combine like terms: -13 + 13 = 0 0 + x = -14.628738838 + 13 x = -14.628738838 + 13 Combine like terms: -14.628738838 + 13 = -1.628738838 x = -1.628738838 Simplifying x = -1.628738838

Solution

The solution to the problem is based on the solutions from the subproblems. x = {27.628738838, -1.628738838}

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