10x^2=-20x+80

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Solution for 10x^2=-20x+80 equation:


Simplifying
10x2 = -20x + 80

Reorder the terms:
10x2 = 80 + -20x

Solving
10x2 = 80 + -20x

Solving for variable 'x'.

Reorder the terms:
-80 + 20x + 10x2 = 80 + -20x + -80 + 20x

Reorder the terms:
-80 + 20x + 10x2 = 80 + -80 + -20x + 20x

Combine like terms: 80 + -80 = 0
-80 + 20x + 10x2 = 0 + -20x + 20x
-80 + 20x + 10x2 = -20x + 20x

Combine like terms: -20x + 20x = 0
-80 + 20x + 10x2 = 0

Factor out the Greatest Common Factor (GCF), '10'.
10(-8 + 2x + x2) = 0

Factor a trinomial.
10((-4 + -1x)(2 + -1x)) = 0

Ignore the factor 10.

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-4, 2}

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