3x^3=3x(x+30)

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Solution for 3x^3=3x(x+30) equation:


Simplifying
3x3 = 3x(x + 30)

Reorder the terms:
3x3 = 3x(30 + x)
3x3 = (30 * 3x + x * 3x)
3x3 = (90x + 3x2)

Solving
3x3 = 90x + 3x2

Solving for variable 'x'.

Reorder the terms:
-90x + -3x2 + 3x3 = 90x + 3x2 + -90x + -3x2

Reorder the terms:
-90x + -3x2 + 3x3 = 90x + -90x + 3x2 + -3x2

Combine like terms: 90x + -90x = 0
-90x + -3x2 + 3x3 = 0 + 3x2 + -3x2
-90x + -3x2 + 3x3 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-90x + -3x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-30 + -1x + x2) = 0

Factor a trinomial.
3x((-5 + -1x)(6 + -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 '(-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 3

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

Solution

x = {0, -5, 6}

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