x^3=400x

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Solution for x^3=400x equation:


Simplifying
x3 = 400x

Solving
x3 = 400x

Solving for variable 'x'.

Reorder the terms:
-400x + x3 = 400x + -400x

Combine like terms: 400x + -400x = 0
-400x + x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-400 + x2) = 0

Factor a difference between two squares.
x((20 + x)(-20 + x)) = 0

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 '(20 + x)' equal to zero and attempt to solve: Simplifying 20 + x = 0 Solving 20 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + x = 0 + -20 x = 0 + -20 Combine like terms: 0 + -20 = -20 x = -20 Simplifying x = -20

Subproblem 3

Set the factor '(-20 + x)' equal to zero and attempt to solve: Simplifying -20 + x = 0 Solving -20 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + x = 0 + 20 Combine like terms: -20 + 20 = 0 0 + x = 0 + 20 x = 0 + 20 Combine like terms: 0 + 20 = 20 x = 20 Simplifying x = 20

Solution

x = {0, -20, 20}

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