(3y+2)(9-y)=0

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Solution for (3y+2)(9-y)=0 equation:


Simplifying
(3y + 2)(9 + -1y) = 0

Reorder the terms:
(2 + 3y)(9 + -1y) = 0

Multiply (2 + 3y) * (9 + -1y)
(2(9 + -1y) + 3y * (9 + -1y)) = 0
((9 * 2 + -1y * 2) + 3y * (9 + -1y)) = 0
((18 + -2y) + 3y * (9 + -1y)) = 0
(18 + -2y + (9 * 3y + -1y * 3y)) = 0
(18 + -2y + (27y + -3y2)) = 0

Combine like terms: -2y + 27y = 25y
(18 + 25y + -3y2) = 0

Solving
18 + 25y + -3y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(9 + -1y)(2 + 3y) = 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 '(2 + 3y)' equal to zero and attempt to solve: Simplifying 2 + 3y = 0 Solving 2 + 3y = 0 Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3y = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3y = 0 + -2 3y = 0 + -2 Combine like terms: 0 + -2 = -2 3y = -2 Divide each side by '3'. y = -0.6666666667 Simplifying y = -0.6666666667

Solution

y = {9, -0.6666666667}

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