-40x=13x^2+x^3

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Solution for -40x=13x^2+x^3 equation:


Simplifying
-40x = 13x2 + x3

Solving
-40x = 13x2 + x3

Solving for variable 'x'.

Reorder the terms:
-40x + -13x2 + -1x3 = 13x2 + -13x2 + x3 + -1x3

Combine like terms: 13x2 + -13x2 = 0
-40x + -13x2 + -1x3 = 0 + x3 + -1x3
-40x + -13x2 + -1x3 = x3 + -1x3

Combine like terms: x3 + -1x3 = 0
-40x + -13x2 + -1x3 = 0

Factor out the Greatest Common Factor (GCF), '-1x'.
-1x(40 + 13x + x2) = 0

Factor a trinomial.
-1x((8 + x)(5 + x)) = 0

Ignore the factor -1.

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 '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {0, -8, -5}

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