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Simplifying (4y + -9)(5 + -1y) = 0 Reorder the terms: (-9 + 4y)(5 + -1y) = 0 Multiply (-9 + 4y) * (5 + -1y) (-9(5 + -1y) + 4y * (5 + -1y)) = 0 ((5 * -9 + -1y * -9) + 4y * (5 + -1y)) = 0 ((-45 + 9y) + 4y * (5 + -1y)) = 0 (-45 + 9y + (5 * 4y + -1y * 4y)) = 0 (-45 + 9y + (20y + -4y2)) = 0 Combine like terms: 9y + 20y = 29y (-45 + 29y + -4y2) = 0 Solving -45 + 29y + -4y2 = 0 Solving for variable 'y'. Factor a trinomial. (-5 + y)(9 + -4y) = 0Subproblem 1
Set the factor '(-5 + y)' equal to zero and attempt to solve: Simplifying -5 + y = 0 Solving -5 + y = 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 + y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + y = 0 + 5 y = 0 + 5 Combine like terms: 0 + 5 = 5 y = 5 Simplifying y = 5Subproblem 2
Set the factor '(9 + -4y)' equal to zero and attempt to solve: Simplifying 9 + -4y = 0 Solving 9 + -4y = 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 + -4y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -4y = 0 + -9 -4y = 0 + -9 Combine like terms: 0 + -9 = -9 -4y = -9 Divide each side by '-4'. y = 2.25 Simplifying y = 2.25Solution
y = {5, 2.25}
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