x^2-25x+125=0

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Solution for x^2-25x+125=0 equation:


Simplifying
x2 + -25x + 125 = 0

Reorder the terms:
125 + -25x + x2 = 0

Solving
125 + -25x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-125' to each side of the equation.
125 + -25x + -125 + x2 = 0 + -125

Reorder the terms:
125 + -125 + -25x + x2 = 0 + -125

Combine like terms: 125 + -125 = 0
0 + -25x + x2 = 0 + -125
-25x + x2 = 0 + -125

Combine like terms: 0 + -125 = -125
-25x + x2 = -125

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 = -125 + 156.25

Reorder the terms:
156.25 + -25x + x2 = -125 + 156.25

Combine like terms: -125 + 156.25 = 31.25
156.25 + -25x + x2 = 31.25

Factor a perfect square on the left side:
(x + -12.5)(x + -12.5) = 31.25

Calculate the square root of the right side: 5.590169944

Break this problem into two subproblems by setting 
(x + -12.5) equal to 5.590169944 and -5.590169944.

Subproblem 1

x + -12.5 = 5.590169944 Simplifying x + -12.5 = 5.590169944 Reorder the terms: -12.5 + x = 5.590169944 Solving -12.5 + x = 5.590169944 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 = 5.590169944 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = 5.590169944 + 12.5 x = 5.590169944 + 12.5 Combine like terms: 5.590169944 + 12.5 = 18.090169944 x = 18.090169944 Simplifying x = 18.090169944

Subproblem 2

x + -12.5 = -5.590169944 Simplifying x + -12.5 = -5.590169944 Reorder the terms: -12.5 + x = -5.590169944 Solving -12.5 + x = -5.590169944 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 = -5.590169944 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = -5.590169944 + 12.5 x = -5.590169944 + 12.5 Combine like terms: -5.590169944 + 12.5 = 6.909830056 x = 6.909830056 Simplifying x = 6.909830056

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.090169944, 6.909830056}

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