-x^2=x-56

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


Simplifying
-1x2 = x + -56

Reorder the terms:
-1x2 = -56 + x

Solving
-1x2 = -56 + x

Solving for variable 'x'.

Reorder the terms:
56 + -1x + -1x2 = -56 + x + 56 + -1x

Reorder the terms:
56 + -1x + -1x2 = -56 + 56 + x + -1x

Combine like terms: -56 + 56 = 0
56 + -1x + -1x2 = 0 + x + -1x
56 + -1x + -1x2 = x + -1x

Combine like terms: x + -1x = 0
56 + -1x + -1x2 = 0

Factor a trinomial.
(7 + -1x)(8 + x) = 0

Subproblem 1

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Subproblem 2

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Solution

x = {7, -8}

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