12y=3y^3+9y^2

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Solution for 12y=3y^3+9y^2 equation:


Simplifying
12y = 3y3 + 9y2

Reorder the terms:
12y = 9y2 + 3y3

Solving
12y = 9y2 + 3y3

Solving for variable 'y'.

Reorder the terms:
12y + -9y2 + -3y3 = 9y2 + -9y2 + 3y3 + -3y3

Combine like terms: 9y2 + -9y2 = 0
12y + -9y2 + -3y3 = 0 + 3y3 + -3y3
12y + -9y2 + -3y3 = 3y3 + -3y3

Combine like terms: 3y3 + -3y3 = 0
12y + -9y2 + -3y3 = 0

Factor out the Greatest Common Factor (GCF), '3y'.
3y(4 + -3y + -1y2) = 0

Factor a trinomial.
3y((1 + -1y)(4 + y)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor 'y' equal to zero and attempt to solve: Simplifying y = 0 Solving y = 0 Move all terms containing y to the left, all other terms to the right. Simplifying y = 0

Subproblem 2

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

Subproblem 3

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

Solution

y = {0, 1, -4}

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