(-5x-40)(x+3)=0

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Solution for (-5x-40)(x+3)=0 equation:


Simplifying
(-5x + -40)(x + 3) = 0

Reorder the terms:
(-40 + -5x)(x + 3) = 0

Reorder the terms:
(-40 + -5x)(3 + x) = 0

Multiply (-40 + -5x) * (3 + x)
(-40(3 + x) + -5x * (3 + x)) = 0
((3 * -40 + x * -40) + -5x * (3 + x)) = 0
((-120 + -40x) + -5x * (3 + x)) = 0
(-120 + -40x + (3 * -5x + x * -5x)) = 0
(-120 + -40x + (-15x + -5x2)) = 0

Combine like terms: -40x + -15x = -55x
(-120 + -55x + -5x2) = 0

Solving
-120 + -55x + -5x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-5'.
-5(24 + 11x + x2) = 0

Factor a trinomial.
-5((8 + x)(3 + x)) = 0

Ignore the factor -5.

Subproblem 1

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

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 = {-8, -3}

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