(2x+6)(x-4)=

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Solution for (2x+6)(x-4)= equation:


Simplifying
(2x + 6)(x + -4) = 0

Reorder the terms:
(6 + 2x)(x + -4) = 0

Reorder the terms:
(6 + 2x)(-4 + x) = 0

Multiply (6 + 2x) * (-4 + x)
(6(-4 + x) + 2x * (-4 + x)) = 0
((-4 * 6 + x * 6) + 2x * (-4 + x)) = 0
((-24 + 6x) + 2x * (-4 + x)) = 0
(-24 + 6x + (-4 * 2x + x * 2x)) = 0
(-24 + 6x + (-8x + 2x2)) = 0

Combine like terms: 6x + -8x = -2x
(-24 + -2x + 2x2) = 0

Solving
-24 + -2x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-12 + -1x + x2) = 0

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

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

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

Solution

x = {-3, 4}

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