y^2+8y+9y+72=0

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Solution for y^2+8y+9y+72=0 equation:


Simplifying
y2 + 8y + 9y + 72 = 0

Reorder the terms:
72 + 8y + 9y + y2 = 0

Combine like terms: 8y + 9y = 17y
72 + 17y + y2 = 0

Solving
72 + 17y + y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(9 + y)(8 + y) = 0

Subproblem 1

Set the factor '(9 + y)' equal to zero and attempt to solve: Simplifying 9 + y = 0 Solving 9 + y = 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 + y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + y = 0 + -9 y = 0 + -9 Combine like terms: 0 + -9 = -9 y = -9 Simplifying y = -9

Subproblem 2

Set the factor '(8 + y)' equal to zero and attempt to solve: Simplifying 8 + y = 0 Solving 8 + y = 0 Move all terms containing y to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + y = 0 + -8 Combine like terms: 8 + -8 = 0 0 + y = 0 + -8 y = 0 + -8 Combine like terms: 0 + -8 = -8 y = -8 Simplifying y = -8

Solution

y = {-9, -8}

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