4y^2+12y+9=-y

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Solution for 4y^2+12y+9=-y equation:


Simplifying
4y2 + 12y + 9 = -1y

Reorder the terms:
9 + 12y + 4y2 = -1y

Solving
9 + 12y + 4y2 = -1y

Solving for variable 'y'.

Reorder the terms:
9 + 12y + y + 4y2 = -1y + y

Combine like terms: 12y + y = 13y
9 + 13y + 4y2 = -1y + y

Combine like terms: -1y + y = 0
9 + 13y + 4y2 = 0

Factor a trinomial.
(9 + 4y)(1 + y) = 0

Subproblem 1

Set the factor '(9 + 4y)' equal to zero and attempt to solve: Simplifying 9 + 4y = 0 Solving 9 + 4y = 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 + 4y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4y = 0 + -9 4y = 0 + -9 Combine like terms: 0 + -9 = -9 4y = -9 Divide each side by '4'. y = -2.25 Simplifying y = -2.25

Subproblem 2

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

Solution

y = {-2.25, -1}

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