y^3+4y^2=45y

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Solution for y^3+4y^2=45y equation:


Simplifying
y3 + 4y2 = 45y

Reorder the terms:
4y2 + y3 = 45y

Solving
4y2 + y3 = 45y

Solving for variable 'y'.

Reorder the terms:
-45y + 4y2 + y3 = 45y + -45y

Combine like terms: 45y + -45y = 0
-45y + 4y2 + y3 = 0

Factor out the Greatest Common Factor (GCF), 'y'.
y(-45 + 4y + y2) = 0

Factor a trinomial.
y((-9 + -1y)(5 + -1y)) = 0

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 '(-9 + -1y)' equal to zero and attempt to solve: Simplifying -9 + -1y = 0 Solving -9 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1y = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1y = 0 + 9 -1y = 0 + 9 Combine like terms: 0 + 9 = 9 -1y = 9 Divide each side by '-1'. y = -9 Simplifying y = -9

Subproblem 3

Set the factor '(5 + -1y)' equal to zero and attempt to solve: Simplifying 5 + -1y = 0 Solving 5 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1y = 0 + -5 -1y = 0 + -5 Combine like terms: 0 + -5 = -5 -1y = -5 Divide each side by '-1'. y = 5 Simplifying y = 5

Solution

y = {0, -9, 5}

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