3x^3+8x^2=-4x

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Solution for 3x^3+8x^2=-4x equation:


Simplifying
3x3 + 8x2 = -4x

Reorder the terms:
8x2 + 3x3 = -4x

Solving
8x2 + 3x3 = -4x

Solving for variable 'x'.

Reorder the terms:
4x + 8x2 + 3x3 = -4x + 4x

Combine like terms: -4x + 4x = 0
4x + 8x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(4 + 8x + 3x2) = 0

Factor a trinomial.
x((2 + x)(2 + 3x)) = 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 '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Subproblem 3

Set the factor '(2 + 3x)' equal to zero and attempt to solve: Simplifying 2 + 3x = 0 Solving 2 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3x = 0 + -2 3x = 0 + -2 Combine like terms: 0 + -2 = -2 3x = -2 Divide each side by '3'. x = -0.6666666667 Simplifying x = -0.6666666667

Solution

x = {0, -2, -0.6666666667}

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