x^3+9x^2=-8x

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Solution for x^3+9x^2=-8x equation:


Simplifying
x3 + 9x2 = -8x

Reorder the terms:
9x2 + x3 = -8x

Solving
9x2 + x3 = -8x

Solving for variable 'x'.

Reorder the terms:
8x + 9x2 + x3 = -8x + 8x

Combine like terms: -8x + 8x = 0
8x + 9x2 + x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(8 + 9x + x2) = 0

Factor a trinomial.
x((8 + x)(1 + 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 '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Subproblem 3

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

Solution

x = {0, -8, -1}

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