x^2-25x+36=0

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Solution for x^2-25x+36=0 equation:


Simplifying
x2 + -25x + 36 = 0

Reorder the terms:
36 + -25x + x2 = 0

Solving
36 + -25x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + -25x + -36 + x2 = 0 + -36

Reorder the terms:
36 + -36 + -25x + x2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -25x + x2 = 0 + -36
-25x + x2 = 0 + -36

Combine like terms: 0 + -36 = -36
-25x + x2 = -36

The x term is -25x.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25x + 156.25 + x2 = -36 + 156.25

Reorder the terms:
156.25 + -25x + x2 = -36 + 156.25

Combine like terms: -36 + 156.25 = 120.25
156.25 + -25x + x2 = 120.25

Factor a perfect square on the left side:
(x + -12.5)(x + -12.5) = 120.25

Calculate the square root of the right side: 10.9658561

Break this problem into two subproblems by setting 
(x + -12.5) equal to 10.9658561 and -10.9658561.

Subproblem 1

x + -12.5 = 10.9658561 Simplifying x + -12.5 = 10.9658561 Reorder the terms: -12.5 + x = 10.9658561 Solving -12.5 + x = 10.9658561 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + x = 10.9658561 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = 10.9658561 + 12.5 x = 10.9658561 + 12.5 Combine like terms: 10.9658561 + 12.5 = 23.4658561 x = 23.4658561 Simplifying x = 23.4658561

Subproblem 2

x + -12.5 = -10.9658561 Simplifying x + -12.5 = -10.9658561 Reorder the terms: -12.5 + x = -10.9658561 Solving -12.5 + x = -10.9658561 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + x = -10.9658561 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = -10.9658561 + 12.5 x = -10.9658561 + 12.5 Combine like terms: -10.9658561 + 12.5 = 1.5341439 x = 1.5341439 Simplifying x = 1.5341439

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.4658561, 1.5341439}

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