4x^2-120=-4x

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Solution for 4x^2-120=-4x equation:


Simplifying
4x2 + -120 = -4x

Reorder the terms:
-120 + 4x2 = -4x

Solving
-120 + 4x2 = -4x

Solving for variable 'x'.

Reorder the terms:
-120 + 4x + 4x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
-120 + 4x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-30 + x + x2) = 0

Factor a trinomial.
4((-6 + -1x)(5 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-6, 5}

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