(9+y)(5y-8)=0

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Solution for (9+y)(5y-8)=0 equation:


Simplifying
(9 + y)(5y + -8) = 0

Reorder the terms:
(9 + y)(-8 + 5y) = 0

Multiply (9 + y) * (-8 + 5y)
(9(-8 + 5y) + y(-8 + 5y)) = 0
((-8 * 9 + 5y * 9) + y(-8 + 5y)) = 0
((-72 + 45y) + y(-8 + 5y)) = 0
(-72 + 45y + (-8 * y + 5y * y)) = 0
(-72 + 45y + (-8y + 5y2)) = 0

Combine like terms: 45y + -8y = 37y
(-72 + 37y + 5y2) = 0

Solving
-72 + 37y + 5y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-9 + -1y)(8 + -5y) = 0

Subproblem 1

Set the factor '(-9 + -1y)' equal to zero and attempt to solve: Simplifying -9 + -1y = 0 Solving -9 + -1y = 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 + -1y = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1y = 0 + 9 -1y = 0 + 9 Combine like terms: 0 + 9 = 9 -1y = 9 Divide each side by '-1'. y = -9 Simplifying y = -9

Subproblem 2

Set the factor '(8 + -5y)' equal to zero and attempt to solve: Simplifying 8 + -5y = 0 Solving 8 + -5y = 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 + -5y = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5y = 0 + -8 -5y = 0 + -8 Combine like terms: 0 + -8 = -8 -5y = -8 Divide each side by '-5'. y = 1.6 Simplifying y = 1.6

Solution

y = {-9, 1.6}

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