(4-y)(2y-5)=0

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Solution for (4-y)(2y-5)=0 equation:


Simplifying
(4 + -1y)(2y + -5) = 0

Reorder the terms:
(4 + -1y)(-5 + 2y) = 0

Multiply (4 + -1y) * (-5 + 2y)
(4(-5 + 2y) + -1y * (-5 + 2y)) = 0
((-5 * 4 + 2y * 4) + -1y * (-5 + 2y)) = 0
((-20 + 8y) + -1y * (-5 + 2y)) = 0
(-20 + 8y + (-5 * -1y + 2y * -1y)) = 0
(-20 + 8y + (5y + -2y2)) = 0

Combine like terms: 8y + 5y = 13y
(-20 + 13y + -2y2) = 0

Solving
-20 + 13y + -2y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-4 + y)(5 + -2y) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(5 + -2y)' equal to zero and attempt to solve: Simplifying 5 + -2y = 0 Solving 5 + -2y = 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 + -2y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2y = 0 + -5 -2y = 0 + -5 Combine like terms: 0 + -5 = -5 -2y = -5 Divide each side by '-2'. y = 2.5 Simplifying y = 2.5

Solution

y = {4, 2.5}

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