20y^2+90y=0

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Solution for 20y^2+90y=0 equation:


Simplifying
20y2 + 90y = 0

Reorder the terms:
90y + 20y2 = 0

Solving
90y + 20y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '10y'.
10y(9 + 2y) = 0

Ignore the factor 10.

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 + 2y)' equal to zero and attempt to solve: Simplifying 9 + 2y = 0 Solving 9 + 2y = 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 + 2y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 2y = 0 + -9 2y = 0 + -9 Combine like terms: 0 + -9 = -9 2y = -9 Divide each side by '2'. y = -4.5 Simplifying y = -4.5

Solution

y = {0, -4.5}

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