(9-y)(4y-2)=0

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Solution for (9-y)(4y-2)=0 equation:


Simplifying
(9 + -1y)(4y + -2) = 0

Reorder the terms:
(9 + -1y)(-2 + 4y) = 0

Multiply (9 + -1y) * (-2 + 4y)
(9(-2 + 4y) + -1y * (-2 + 4y)) = 0
((-2 * 9 + 4y * 9) + -1y * (-2 + 4y)) = 0
((-18 + 36y) + -1y * (-2 + 4y)) = 0
(-18 + 36y + (-2 * -1y + 4y * -1y)) = 0
(-18 + 36y + (2y + -4y2)) = 0

Combine like terms: 36y + 2y = 38y
(-18 + 38y + -4y2) = 0

Solving
-18 + 38y + -4y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-9 + 19y + -2y2) = 0

Factor a trinomial.
2((-9 + y)(1 + -2y)) = 0

Ignore the factor 2.

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 '(1 + -2y)' equal to zero and attempt to solve: Simplifying 1 + -2y = 0 Solving 1 + -2y = 0 Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2y = 0 + -1 -2y = 0 + -1 Combine like terms: 0 + -1 = -1 -2y = -1 Divide each side by '-2'. y = 0.5 Simplifying y = 0.5

Solution

y = {9, 0.5}

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