4x^2-4x-8=16

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Solution for 4x^2-4x-8=16 equation:


Simplifying
4x2 + -4x + -8 = 16

Reorder the terms:
-8 + -4x + 4x2 = 16

Solving
-8 + -4x + 4x2 = 16

Solving for variable 'x'.

Reorder the terms:
-8 + -16 + -4x + 4x2 = 16 + -16

Combine like terms: -8 + -16 = -24
-24 + -4x + 4x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-24 + -4x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-6 + -1x + x2) = 0

Factor a trinomial.
4((-2 + -1x)(3 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

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

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-2, 3}

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