(2y+7)(1-y)=0

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Solution for (2y+7)(1-y)=0 equation:


Simplifying
(2y + 7)(1 + -1y) = 0

Reorder the terms:
(7 + 2y)(1 + -1y) = 0

Multiply (7 + 2y) * (1 + -1y)
(7(1 + -1y) + 2y * (1 + -1y)) = 0
((1 * 7 + -1y * 7) + 2y * (1 + -1y)) = 0
((7 + -7y) + 2y * (1 + -1y)) = 0
(7 + -7y + (1 * 2y + -1y * 2y)) = 0
(7 + -7y + (2y + -2y2)) = 0

Combine like terms: -7y + 2y = -5y
(7 + -5y + -2y2) = 0

Solving
7 + -5y + -2y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(1 + -1y)(7 + 2y) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(7 + 2y)' equal to zero and attempt to solve: Simplifying 7 + 2y = 0 Solving 7 + 2y = 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 + 2y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2y = 0 + -7 2y = 0 + -7 Combine like terms: 0 + -7 = -7 2y = -7 Divide each side by '2'. y = -3.5 Simplifying y = -3.5

Solution

y = {1, -3.5}

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