x^2-25x+16=0

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Solution for x^2-25x+16=0 equation:


Simplifying
x2 + -25x + 16 = 0

Reorder the terms:
16 + -25x + x2 = 0

Solving
16 + -25x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-16' to each side of the equation.
16 + -25x + -16 + x2 = 0 + -16

Reorder the terms:
16 + -16 + -25x + x2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -25x + x2 = 0 + -16
-25x + x2 = 0 + -16

Combine like terms: 0 + -16 = -16
-25x + x2 = -16

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 = -16 + 156.25

Reorder the terms:
156.25 + -25x + x2 = -16 + 156.25

Combine like terms: -16 + 156.25 = 140.25
156.25 + -25x + x2 = 140.25

Factor a perfect square on the left side:
(x + -12.5)(x + -12.5) = 140.25

Calculate the square root of the right side: 11.842719282

Break this problem into two subproblems by setting 
(x + -12.5) equal to 11.842719282 and -11.842719282.

Subproblem 1

x + -12.5 = 11.842719282 Simplifying x + -12.5 = 11.842719282 Reorder the terms: -12.5 + x = 11.842719282 Solving -12.5 + x = 11.842719282 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 = 11.842719282 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = 11.842719282 + 12.5 x = 11.842719282 + 12.5 Combine like terms: 11.842719282 + 12.5 = 24.342719282 x = 24.342719282 Simplifying x = 24.342719282

Subproblem 2

x + -12.5 = -11.842719282 Simplifying x + -12.5 = -11.842719282 Reorder the terms: -12.5 + x = -11.842719282 Solving -12.5 + x = -11.842719282 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 = -11.842719282 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = -11.842719282 + 12.5 x = -11.842719282 + 12.5 Combine like terms: -11.842719282 + 12.5 = 0.657280718 x = 0.657280718 Simplifying x = 0.657280718

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.342719282, 0.657280718}

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