x^2-125x+20=0

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Solution for x^2-125x+20=0 equation:


Simplifying
x2 + -125x + 20 = 0

Reorder the terms:
20 + -125x + x2 = 0

Solving
20 + -125x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -125x + -20 + x2 = 0 + -20

Reorder the terms:
20 + -20 + -125x + x2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -125x + x2 = 0 + -20
-125x + x2 = 0 + -20

Combine like terms: 0 + -20 = -20
-125x + x2 = -20

The x term is -125x.  Take half its coefficient (-62.5).
Square it (3906.25) and add it to both sides.

Add '3906.25' to each side of the equation.
-125x + 3906.25 + x2 = -20 + 3906.25

Reorder the terms:
3906.25 + -125x + x2 = -20 + 3906.25

Combine like terms: -20 + 3906.25 = 3886.25
3906.25 + -125x + x2 = 3886.25

Factor a perfect square on the left side:
(x + -62.5)(x + -62.5) = 3886.25

Calculate the square root of the right side: 62.339794674

Break this problem into two subproblems by setting 
(x + -62.5) equal to 62.339794674 and -62.339794674.

Subproblem 1

x + -62.5 = 62.339794674 Simplifying x + -62.5 = 62.339794674 Reorder the terms: -62.5 + x = 62.339794674 Solving -62.5 + x = 62.339794674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '62.5' to each side of the equation. -62.5 + 62.5 + x = 62.339794674 + 62.5 Combine like terms: -62.5 + 62.5 = 0.0 0.0 + x = 62.339794674 + 62.5 x = 62.339794674 + 62.5 Combine like terms: 62.339794674 + 62.5 = 124.839794674 x = 124.839794674 Simplifying x = 124.839794674

Subproblem 2

x + -62.5 = -62.339794674 Simplifying x + -62.5 = -62.339794674 Reorder the terms: -62.5 + x = -62.339794674 Solving -62.5 + x = -62.339794674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '62.5' to each side of the equation. -62.5 + 62.5 + x = -62.339794674 + 62.5 Combine like terms: -62.5 + 62.5 = 0.0 0.0 + x = -62.339794674 + 62.5 x = -62.339794674 + 62.5 Combine like terms: -62.339794674 + 62.5 = 0.160205326 x = 0.160205326 Simplifying x = 0.160205326

Solution

The solution to the problem is based on the solutions from the subproblems. x = {124.839794674, 0.160205326}

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