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

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


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

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

Multiply (5 + y) * (-9 + 5y)
(5(-9 + 5y) + y(-9 + 5y)) = 0
((-9 * 5 + 5y * 5) + y(-9 + 5y)) = 0
((-45 + 25y) + y(-9 + 5y)) = 0
(-45 + 25y + (-9 * y + 5y * y)) = 0
(-45 + 25y + (-9y + 5y2)) = 0

Combine like terms: 25y + -9y = 16y
(-45 + 16y + 5y2) = 0

Solving
-45 + 16y + 5y2 = 0

Solving for variable 'y'.

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

Subproblem 1

Set the factor '(-5 + -1y)' equal to zero and attempt to solve: Simplifying -5 + -1y = 0 Solving -5 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1y = 0 + 5 -1y = 0 + 5 Combine like terms: 0 + 5 = 5 -1y = 5 Divide each side by '-1'. y = -5 Simplifying y = -5

Subproblem 2

Set the factor '(9 + -5y)' equal to zero and attempt to solve: Simplifying 9 + -5y = 0 Solving 9 + -5y = 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 + -5y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5y = 0 + -9 -5y = 0 + -9 Combine like terms: 0 + -9 = -9 -5y = -9 Divide each side by '-5'. y = 1.8 Simplifying y = 1.8

Solution

y = {-5, 1.8}

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