(3x+9)(2x+8)=

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Solution for (3x+9)(2x+8)= equation:


Simplifying
(3x + 9)(2x + 8) = 0

Reorder the terms:
(9 + 3x)(2x + 8) = 0

Reorder the terms:
(9 + 3x)(8 + 2x) = 0

Multiply (9 + 3x) * (8 + 2x)
(9(8 + 2x) + 3x * (8 + 2x)) = 0
((8 * 9 + 2x * 9) + 3x * (8 + 2x)) = 0
((72 + 18x) + 3x * (8 + 2x)) = 0
(72 + 18x + (8 * 3x + 2x * 3x)) = 0
(72 + 18x + (24x + 6x2)) = 0

Combine like terms: 18x + 24x = 42x
(72 + 42x + 6x2) = 0

Solving
72 + 42x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6'.
6(12 + 7x + x2) = 0

Factor a trinomial.
6((4 + x)(3 + x)) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 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 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Solution

x = {-4, -3}

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