3x^3-12x=-9x^2

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Solution for 3x^3-12x=-9x^2 equation:


Simplifying
3x3 + -12x = -9x2

Reorder the terms:
-12x + 3x3 = -9x2

Solving
-12x + 3x3 = -9x2

Solving for variable 'x'.

Reorder the terms:
-12x + 9x2 + 3x3 = -9x2 + 9x2

Combine like terms: -9x2 + 9x2 = 0
-12x + 9x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-4 + 3x + x2) = 0

Factor a trinomial.
3x((-4 + -1x)(1 + -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 '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 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 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 3

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

Solution

x = {0, -4, 1}

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