-x^2+20x-80=-80

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Solution for -x^2+20x-80=-80 equation:


Simplifying
-1x2 + 20x + -80 = -80

Reorder the terms:
-80 + 20x + -1x2 = -80

Add '80' to each side of the equation.
-80 + 20x + 80 + -1x2 = -80 + 80

Reorder the terms:
-80 + 80 + 20x + -1x2 = -80 + 80

Combine like terms: -80 + 80 = 0
0 + 20x + -1x2 = -80 + 80
20x + -1x2 = -80 + 80

Combine like terms: -80 + 80 = 0
20x + -1x2 = 0

Solving
20x + -1x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(20 + -1x) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(20 + -1x)' equal to zero and attempt to solve: Simplifying 20 + -1x = 0 Solving 20 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1x = 0 + -20 -1x = 0 + -20 Combine like terms: 0 + -20 = -20 -1x = -20 Divide each side by '-1'. x = 20 Simplifying x = 20

Solution

x = {0, 20}

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