3x(x^2+5x)=-18x

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Solution for 3x(x^2+5x)=-18x equation:


Simplifying
3x(x2 + 5x) = -18x

Reorder the terms:
3x(5x + x2) = -18x
(5x * 3x + x2 * 3x) = -18x
(15x2 + 3x3) = -18x

Solving
15x2 + 3x3 = -18x

Solving for variable 'x'.

Reorder the terms:
18x + 15x2 + 3x3 = -18x + 18x

Combine like terms: -18x + 18x = 0
18x + 15x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(6 + 5x + x2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

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

Subproblem 3

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 = {0, -3, -2}

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