8x^2=80-12x

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Solution for 8x^2=80-12x equation:


Simplifying
8x2 = 80 + -12x

Solving
8x2 = 80 + -12x

Solving for variable 'x'.

Reorder the terms:
-80 + 12x + 8x2 = 80 + -12x + -80 + 12x

Reorder the terms:
-80 + 12x + 8x2 = 80 + -80 + -12x + 12x

Combine like terms: 80 + -80 = 0
-80 + 12x + 8x2 = 0 + -12x + 12x
-80 + 12x + 8x2 = -12x + 12x

Combine like terms: -12x + 12x = 0
-80 + 12x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-20 + 3x + 2x2) = 0

Factor a trinomial.
4((-4 + -1x)(5 + -2x)) = 0

Ignore the factor 4.

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 '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Solution

x = {-4, 2.5}

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