4x^2-12x=216

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Solution for 4x^2-12x=216 equation:


Simplifying
4x2 + -12x = 216

Reorder the terms:
-12x + 4x2 = 216

Solving
-12x + 4x2 = 216

Solving for variable 'x'.

Reorder the terms:
-216 + -12x + 4x2 = 216 + -216

Combine like terms: 216 + -216 = 0
-216 + -12x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-54 + -3x + x2) = 0

Factor a trinomial.
4((-6 + -1x)(9 + -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 '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-6, 9}

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