0=-x^2+26x-46

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Solution for 0=-x^2+26x-46 equation:


Simplifying
0 = -1x2 + 26x + -46

Reorder the terms:
0 = -46 + 26x + -1x2

Solving
0 = -46 + 26x + -1x2

Solving for variable 'x'.

Combine like terms: 0 + 46 = 46
46 + -26x + x2 = -46 + 26x + -1x2 + 46 + -26x + x2

Reorder the terms:
46 + -26x + x2 = -46 + 46 + 26x + -26x + -1x2 + x2

Combine like terms: -46 + 46 = 0
46 + -26x + x2 = 0 + 26x + -26x + -1x2 + x2
46 + -26x + x2 = 26x + -26x + -1x2 + x2

Combine like terms: 26x + -26x = 0
46 + -26x + x2 = 0 + -1x2 + x2
46 + -26x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
46 + -26x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-46' to each side of the equation.
46 + -26x + -46 + x2 = 0 + -46

Reorder the terms:
46 + -46 + -26x + x2 = 0 + -46

Combine like terms: 46 + -46 = 0
0 + -26x + x2 = 0 + -46
-26x + x2 = 0 + -46

Combine like terms: 0 + -46 = -46
-26x + x2 = -46

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 = -46 + 169

Reorder the terms:
169 + -26x + x2 = -46 + 169

Combine like terms: -46 + 169 = 123
169 + -26x + x2 = 123

Factor a perfect square on the left side:
(x + -13)(x + -13) = 123

Calculate the square root of the right side: 11.090536506

Break this problem into two subproblems by setting 
(x + -13) equal to 11.090536506 and -11.090536506.

Subproblem 1

x + -13 = 11.090536506 Simplifying x + -13 = 11.090536506 Reorder the terms: -13 + x = 11.090536506 Solving -13 + x = 11.090536506 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 = 11.090536506 + 13 Combine like terms: -13 + 13 = 0 0 + x = 11.090536506 + 13 x = 11.090536506 + 13 Combine like terms: 11.090536506 + 13 = 24.090536506 x = 24.090536506 Simplifying x = 24.090536506

Subproblem 2

x + -13 = -11.090536506 Simplifying x + -13 = -11.090536506 Reorder the terms: -13 + x = -11.090536506 Solving -13 + x = -11.090536506 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 = -11.090536506 + 13 Combine like terms: -13 + 13 = 0 0 + x = -11.090536506 + 13 x = -11.090536506 + 13 Combine like terms: -11.090536506 + 13 = 1.909463494 x = 1.909463494 Simplifying x = 1.909463494

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.090536506, 1.909463494}

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