(4y-5)(8y+3)=

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Solution for (4y-5)(8y+3)= equation:


Simplifying
(4y + -5)(8y + 3) = 0

Reorder the terms:
(-5 + 4y)(8y + 3) = 0

Reorder the terms:
(-5 + 4y)(3 + 8y) = 0

Multiply (-5 + 4y) * (3 + 8y)
(-5(3 + 8y) + 4y * (3 + 8y)) = 0
((3 * -5 + 8y * -5) + 4y * (3 + 8y)) = 0
((-15 + -40y) + 4y * (3 + 8y)) = 0
(-15 + -40y + (3 * 4y + 8y * 4y)) = 0
(-15 + -40y + (12y + 32y2)) = 0

Combine like terms: -40y + 12y = -28y
(-15 + -28y + 32y2) = 0

Solving
-15 + -28y + 32y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-3 + -8y)(5 + -4y) = 0

Subproblem 1

Set the factor '(-3 + -8y)' equal to zero and attempt to solve: Simplifying -3 + -8y = 0 Solving -3 + -8y = 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 + -8y = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -8y = 0 + 3 -8y = 0 + 3 Combine like terms: 0 + 3 = 3 -8y = 3 Divide each side by '-8'. y = -0.375 Simplifying y = -0.375

Subproblem 2

Set the factor '(5 + -4y)' equal to zero and attempt to solve: Simplifying 5 + -4y = 0 Solving 5 + -4y = 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 + -4y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -4y = 0 + -5 -4y = 0 + -5 Combine like terms: 0 + -5 = -5 -4y = -5 Divide each side by '-4'. y = 1.25 Simplifying y = 1.25

Solution

y = {-0.375, 1.25}

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