(x+5)(3x-6)=0

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Solution for (x+5)(3x-6)=0 equation:


Simplifying
(x + 5)(3x + -6) = 0

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

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

Multiply (5 + x) * (-6 + 3x)
(5(-6 + 3x) + x(-6 + 3x)) = 0
((-6 * 5 + 3x * 5) + x(-6 + 3x)) = 0
((-30 + 15x) + x(-6 + 3x)) = 0
(-30 + 15x + (-6 * x + 3x * x)) = 0
(-30 + 15x + (-6x + 3x2)) = 0

Combine like terms: 15x + -6x = 9x
(-30 + 9x + 3x2) = 0

Solving
-30 + 9x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-10 + 3x + x2) = 0

Factor a trinomial.
3((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-5, 2}

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