2x^3-20x=30x

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Solution for 2x^3-20x=30x equation:


Simplifying
2x3 + -20x = 30x

Reorder the terms:
-20x + 2x3 = 30x

Solving
-20x + 2x3 = 30x

Solving for variable 'x'.

Reorder the terms:
-20x + -30x + 2x3 = 30x + -30x

Combine like terms: -20x + -30x = -50x
-50x + 2x3 = 30x + -30x

Combine like terms: 30x + -30x = 0
-50x + 2x3 = 0

Factor out the Greatest Common Factor (GCF), '2x'.
2x(-25 + x2) = 0

Factor a difference between two squares.
2x((5 + x)(-5 + x)) = 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 '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 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 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Subproblem 3

Set the factor '(-5 + x)' equal to zero and attempt to solve: Simplifying -5 + x = 0 Solving -5 + x = 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 + x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + x = 0 + 5 x = 0 + 5 Combine like terms: 0 + 5 = 5 x = 5 Simplifying x = 5

Solution

x = {0, -5, 5}

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