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

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


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

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

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

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

Combine like terms: -3x + -4x = -7x
(-12 + -7x + -1x2) = 0

Solving
-12 + -7x + -1x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(12 + 7x + x2) = 0

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

Ignore the factor -1.

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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