4x^3-16x=20x

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Solution for 4x^3-16x=20x equation:


Simplifying
4x3 + -16x = 20x

Reorder the terms:
-16x + 4x3 = 20x

Solving
-16x + 4x3 = 20x

Solving for variable 'x'.

Reorder the terms:
-16x + -20x + 4x3 = 20x + -20x

Combine like terms: -16x + -20x = -36x
-36x + 4x3 = 20x + -20x

Combine like terms: 20x + -20x = 0
-36x + 4x3 = 0

Factor out the Greatest Common Factor (GCF), '4x'.
4x(-9 + x2) = 0

Factor a difference between two squares.
4x((3 + x)(-3 + x)) = 0

Ignore the factor 4.

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 '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 3

Set the factor '(-3 + x)' equal to zero and attempt to solve: Simplifying -3 + x = 0 Solving -3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0 + 3 x = 0 + 3 Combine like terms: 0 + 3 = 3 x = 3 Simplifying x = 3

Solution

x = {0, -3, 3}

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