5y^2+9y=-4

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Solution for 5y^2+9y=-4 equation:


Simplifying
5y2 + 9y = -4

Reorder the terms:
9y + 5y2 = -4

Solving
9y + 5y2 = -4

Solving for variable 'y'.

Reorder the terms:
4 + 9y + 5y2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + 9y + 5y2 = 0

Factor a trinomial.
(1 + y)(4 + 5y) = 0

Subproblem 1

Set the factor '(1 + y)' equal to zero and attempt to solve: Simplifying 1 + y = 0 Solving 1 + y = 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 + y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + y = 0 + -1 y = 0 + -1 Combine like terms: 0 + -1 = -1 y = -1 Simplifying y = -1

Subproblem 2

Set the factor '(4 + 5y)' equal to zero and attempt to solve: Simplifying 4 + 5y = 0 Solving 4 + 5y = 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 + 5y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 5y = 0 + -4 5y = 0 + -4 Combine like terms: 0 + -4 = -4 5y = -4 Divide each side by '5'. y = -0.8 Simplifying y = -0.8

Solution

y = {-1, -0.8}

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