(4y-7)(8+y)=0

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Solution for (4y-7)(8+y)=0 equation:


Simplifying
(4y + -7)(8 + y) = 0

Reorder the terms:
(-7 + 4y)(8 + y) = 0

Multiply (-7 + 4y) * (8 + y)
(-7(8 + y) + 4y * (8 + y)) = 0
((8 * -7 + y * -7) + 4y * (8 + y)) = 0
((-56 + -7y) + 4y * (8 + y)) = 0
(-56 + -7y + (8 * 4y + y * 4y)) = 0
(-56 + -7y + (32y + 4y2)) = 0

Combine like terms: -7y + 32y = 25y
(-56 + 25y + 4y2) = 0

Solving
-56 + 25y + 4y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-8 + -1y)(7 + -4y) = 0

Subproblem 1

Set the factor '(-8 + -1y)' equal to zero and attempt to solve: Simplifying -8 + -1y = 0 Solving -8 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1y = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1y = 0 + 8 -1y = 0 + 8 Combine like terms: 0 + 8 = 8 -1y = 8 Divide each side by '-1'. y = -8 Simplifying y = -8

Subproblem 2

Set the factor '(7 + -4y)' equal to zero and attempt to solve: Simplifying 7 + -4y = 0 Solving 7 + -4y = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -4y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -4y = 0 + -7 -4y = 0 + -7 Combine like terms: 0 + -7 = -7 -4y = -7 Divide each side by '-4'. y = 1.75 Simplifying y = 1.75

Solution

y = {-8, 1.75}

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