-15x^3=-10x^2-40x

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Solution for -15x^3=-10x^2-40x equation:


Simplifying
-15x3 = -10x2 + -40x

Reorder the terms:
-15x3 = -40x + -10x2

Solving
-15x3 = -40x + -10x2

Solving for variable 'x'.

Reorder the terms:
40x + 10x2 + -15x3 = -40x + -10x2 + 40x + 10x2

Reorder the terms:
40x + 10x2 + -15x3 = -40x + 40x + -10x2 + 10x2

Combine like terms: -40x + 40x = 0
40x + 10x2 + -15x3 = 0 + -10x2 + 10x2
40x + 10x2 + -15x3 = -10x2 + 10x2

Combine like terms: -10x2 + 10x2 = 0
40x + 10x2 + -15x3 = 0

Factor out the Greatest Common Factor (GCF), '5x'.
5x(8 + 2x + -3x2) = 0

Factor a trinomial.
5x((2 + -1x)(4 + 3x)) = 0

Ignore the factor 5.

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 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 3

Set the factor '(4 + 3x)' equal to zero and attempt to solve: Simplifying 4 + 3x = 0 Solving 4 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3x = 0 + -4 3x = 0 + -4 Combine like terms: 0 + -4 = -4 3x = -4 Divide each side by '3'. x = -1.333333333 Simplifying x = -1.333333333

Solution

x = {0, 2, -1.333333333}

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