x^3=3x+2x^2

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Solution for x^3=3x+2x^2 equation:


Simplifying
x3 = 3x + 2x2

Solving
x3 = 3x + 2x2

Solving for variable 'x'.

Reorder the terms:
-3x + -2x2 + x3 = 3x + 2x2 + -3x + -2x2

Reorder the terms:
-3x + -2x2 + x3 = 3x + -3x + 2x2 + -2x2

Combine like terms: 3x + -3x = 0
-3x + -2x2 + x3 = 0 + 2x2 + -2x2
-3x + -2x2 + x3 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-3x + -2x2 + x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-3 + -2x + x2) = 0

Factor a trinomial.
x((-1 + -1x)(3 + -1x)) = 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 '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1

Subproblem 3

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {0, -1, 3}

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