(-x-4)*(3x+3)=0

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Solution for (-x-4)*(3x+3)=0 equation:


Simplifying
(-1x + -4)(3x + 3) = 0

Reorder the terms:
(-4 + -1x)(3x + 3) = 0

Reorder the terms:
(-4 + -1x)(3 + 3x) = 0

Multiply (-4 + -1x) * (3 + 3x)
(-4(3 + 3x) + -1x * (3 + 3x)) = 0
((3 * -4 + 3x * -4) + -1x * (3 + 3x)) = 0
((-12 + -12x) + -1x * (3 + 3x)) = 0
(-12 + -12x + (3 * -1x + 3x * -1x)) = 0
(-12 + -12x + (-3x + -3x2)) = 0

Combine like terms: -12x + -3x = -15x
(-12 + -15x + -3x2) = 0

Solving
-12 + -15x + -3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-3'.
-3(4 + 5x + x2) = 0

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

Ignore the factor -3.

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

Solution

x = {-4, -1}

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