5y-2y^2=-18

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Solution for 5y-2y^2=-18 equation:


Simplifying
5y + -2y2 = -18

Solving
5y + -2y2 = -18

Solving for variable 'y'.

Reorder the terms:
18 + 5y + -2y2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + 5y + -2y2 = 0

Factor a trinomial.
(9 + -2y)(2 + y) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(2 + y)' equal to zero and attempt to solve: Simplifying 2 + y = 0 Solving 2 + y = 0 Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + y = 0 + -2 Combine like terms: 2 + -2 = 0 0 + y = 0 + -2 y = 0 + -2 Combine like terms: 0 + -2 = -2 y = -2 Simplifying y = -2

Solution

y = {4.5, -2}

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