x^2-25x=56

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Solution for x^2-25x=56 equation:


Simplifying
x2 + -25x = 56

Reorder the terms:
-25x + x2 = 56

Solving
-25x + x2 = 56

Solving for variable 'x'.

Reorder the terms:
-56 + -25x + x2 = 56 + -56

Combine like terms: 56 + -56 = 0
-56 + -25x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '56' to each side of the equation.
-56 + -25x + 56 + x2 = 0 + 56

Reorder the terms:
-56 + 56 + -25x + x2 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + -25x + x2 = 0 + 56
-25x + x2 = 0 + 56

Combine like terms: 0 + 56 = 56
-25x + x2 = 56

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 = 56 + 156.25

Reorder the terms:
156.25 + -25x + x2 = 56 + 156.25

Combine like terms: 56 + 156.25 = 212.25
156.25 + -25x + x2 = 212.25

Factor a perfect square on the left side:
(x + -12.5)(x + -12.5) = 212.25

Calculate the square root of the right side: 14.568802284

Break this problem into two subproblems by setting 
(x + -12.5) equal to 14.568802284 and -14.568802284.

Subproblem 1

x + -12.5 = 14.568802284 Simplifying x + -12.5 = 14.568802284 Reorder the terms: -12.5 + x = 14.568802284 Solving -12.5 + x = 14.568802284 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 = 14.568802284 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = 14.568802284 + 12.5 x = 14.568802284 + 12.5 Combine like terms: 14.568802284 + 12.5 = 27.068802284 x = 27.068802284 Simplifying x = 27.068802284

Subproblem 2

x + -12.5 = -14.568802284 Simplifying x + -12.5 = -14.568802284 Reorder the terms: -12.5 + x = -14.568802284 Solving -12.5 + x = -14.568802284 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 = -14.568802284 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + x = -14.568802284 + 12.5 x = -14.568802284 + 12.5 Combine like terms: -14.568802284 + 12.5 = -2.068802284 x = -2.068802284 Simplifying x = -2.068802284

Solution

The solution to the problem is based on the solutions from the subproblems. x = {27.068802284, -2.068802284}

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