(2x-4)(x+8)=

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Solution for (2x-4)(x+8)= equation:


Simplifying
(2x + -4)(x + 8) = 0

Reorder the terms:
(-4 + 2x)(x + 8) = 0

Reorder the terms:
(-4 + 2x)(8 + x) = 0

Multiply (-4 + 2x) * (8 + x)
(-4(8 + x) + 2x * (8 + x)) = 0
((8 * -4 + x * -4) + 2x * (8 + x)) = 0
((-32 + -4x) + 2x * (8 + x)) = 0
(-32 + -4x + (8 * 2x + x * 2x)) = 0
(-32 + -4x + (16x + 2x2)) = 0

Combine like terms: -4x + 16x = 12x
(-32 + 12x + 2x2) = 0

Solving
-32 + 12x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-16 + 6x + x2) = 0

Factor a trinomial.
2((-8 + -1x)(2 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-8 + -1x)' equal to zero and attempt to solve: Simplifying -8 + -1x = 0 Solving -8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1x = 0 + 8 -1x = 0 + 8 Combine like terms: 0 + 8 = 8 -1x = 8 Divide each side by '-1'. x = -8 Simplifying x = -8

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 = {-8, 2}

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