5y^2-3y^2=72y+9y

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Solution for 5y^2-3y^2=72y+9y equation:


Simplifying
5y2 + -3y2 = 72y + 9y

Combine like terms: 5y2 + -3y2 = 2y2
2y2 = 72y + 9y

Combine like terms: 72y + 9y = 81y
2y2 = 81y

Solving
2y2 = 81y

Solving for variable 'y'.

Reorder the terms:
-81y + 2y2 = 81y + -81y

Combine like terms: 81y + -81y = 0
-81y + 2y2 = 0

Factor out the Greatest Common Factor (GCF), 'y'.
y(-81 + 2y) = 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 '(-81 + 2y)' equal to zero and attempt to solve: Simplifying -81 + 2y = 0 Solving -81 + 2y = 0 Move all terms containing y to the left, all other terms to the right. Add '81' to each side of the equation. -81 + 81 + 2y = 0 + 81 Combine like terms: -81 + 81 = 0 0 + 2y = 0 + 81 2y = 0 + 81 Combine like terms: 0 + 81 = 81 2y = 81 Divide each side by '2'. y = 40.5 Simplifying y = 40.5

Solution

y = {0, 40.5}

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