(9-y)(5y-2)=0

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Solution for (9-y)(5y-2)=0 equation:


Simplifying
(9 + -1y)(5y + -2) = 0

Reorder the terms:
(9 + -1y)(-2 + 5y) = 0

Multiply (9 + -1y) * (-2 + 5y)
(9(-2 + 5y) + -1y * (-2 + 5y)) = 0
((-2 * 9 + 5y * 9) + -1y * (-2 + 5y)) = 0
((-18 + 45y) + -1y * (-2 + 5y)) = 0
(-18 + 45y + (-2 * -1y + 5y * -1y)) = 0
(-18 + 45y + (2y + -5y2)) = 0

Combine like terms: 45y + 2y = 47y
(-18 + 47y + -5y2) = 0

Solving
-18 + 47y + -5y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-9 + y)(2 + -5y) = 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 '(2 + -5y)' equal to zero and attempt to solve: Simplifying 2 + -5y = 0 Solving 2 + -5y = 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 + -5y = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5y = 0 + -2 -5y = 0 + -2 Combine like terms: 0 + -2 = -2 -5y = -2 Divide each side by '-5'. y = 0.4 Simplifying y = 0.4

Solution

y = {9, 0.4}

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