2x^3=30x^2-108x

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Solution for 2x^3=30x^2-108x equation:


Simplifying
2x3 = 30x2 + -108x

Reorder the terms:
2x3 = -108x + 30x2

Solving
2x3 = -108x + 30x2

Solving for variable 'x'.

Reorder the terms:
108x + -30x2 + 2x3 = -108x + 30x2 + 108x + -30x2

Reorder the terms:
108x + -30x2 + 2x3 = -108x + 108x + 30x2 + -30x2

Combine like terms: -108x + 108x = 0
108x + -30x2 + 2x3 = 0 + 30x2 + -30x2
108x + -30x2 + 2x3 = 30x2 + -30x2

Combine like terms: 30x2 + -30x2 = 0
108x + -30x2 + 2x3 = 0

Factor out the Greatest Common Factor (GCF), '2x'.
2x(54 + -15x + x2) = 0

Factor a trinomial.
2x((6 + -1x)(9 + -1x)) = 0

Ignore the factor 2.

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 '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Subproblem 3

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {0, 6, 9}

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