(3x^3)-(3x^2)-(18x)=0

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Solution for (3x^3)-(3x^2)-(18x)=0 equation:


Simplifying
(3x3) + -1(3x2) + -1(18x) = 0

Remove parenthesis around (3x2)
(3x3) + -1 * 3x2 + -1(18x) = 0

Multiply -1 * 3
(3x3) + -3x2 + -1(18x) = 0

Remove parenthesis around (18x)
(3x3) + -3x2 + -1 * 18x = 0

Multiply -1 * 18
(3x3) + -3x2 + -18x = 0

Reorder the terms:
-18x + -3x2 + (3x3) = 0

Solving
-18x + -3x2 + (3x3) = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-6 + -1x + x2) = 0

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

Subproblem 3

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {0, -2, 3}

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