(3x+6)*(x+9)=

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Solution for (3x+6)*(x+9)= equation:


Simplifying
(3x + 6)(x + 9) = 0

Reorder the terms:
(6 + 3x)(x + 9) = 0

Reorder the terms:
(6 + 3x)(9 + x) = 0

Multiply (6 + 3x) * (9 + x)
(6(9 + x) + 3x * (9 + x)) = 0
((9 * 6 + x * 6) + 3x * (9 + x)) = 0
((54 + 6x) + 3x * (9 + x)) = 0
(54 + 6x + (9 * 3x + x * 3x)) = 0
(54 + 6x + (27x + 3x2)) = 0

Combine like terms: 6x + 27x = 33x
(54 + 33x + 3x2) = 0

Solving
54 + 33x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(18 + 11x + x2) = 0

Factor a trinomial.
3((9 + x)(2 + x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 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 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {-9, -2}

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