(y-9)(4y-3)=0

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Solution for (y-9)(4y-3)=0 equation:


Simplifying
(y + -9)(4y + -3) = 0

Reorder the terms:
(-9 + y)(4y + -3) = 0

Reorder the terms:
(-9 + y)(-3 + 4y) = 0

Multiply (-9 + y) * (-3 + 4y)
(-9(-3 + 4y) + y(-3 + 4y)) = 0
((-3 * -9 + 4y * -9) + y(-3 + 4y)) = 0
((27 + -36y) + y(-3 + 4y)) = 0
(27 + -36y + (-3 * y + 4y * y)) = 0
(27 + -36y + (-3y + 4y2)) = 0

Combine like terms: -36y + -3y = -39y
(27 + -39y + 4y2) = 0

Solving
27 + -39y + 4y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(3 + -4y)(9 + -1y) = 0

Subproblem 1

Set the factor '(3 + -4y)' equal to zero and attempt to solve: Simplifying 3 + -4y = 0 Solving 3 + -4y = 0 Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -4y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4y = 0 + -3 -4y = 0 + -3 Combine like terms: 0 + -3 = -3 -4y = -3 Divide each side by '-4'. y = 0.75 Simplifying y = 0.75

Subproblem 2

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

Solution

y = {0.75, 9}

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