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Simplifying (2y + -2)(y + 2) = 0 Reorder the terms: (-2 + 2y)(y + 2) = 0 Reorder the terms: (-2 + 2y)(2 + y) = 0 Multiply (-2 + 2y) * (2 + y) (-2(2 + y) + 2y * (2 + y)) = 0 ((2 * -2 + y * -2) + 2y * (2 + y)) = 0 ((-4 + -2y) + 2y * (2 + y)) = 0 (-4 + -2y + (2 * 2y + y * 2y)) = 0 (-4 + -2y + (4y + 2y2)) = 0 Combine like terms: -2y + 4y = 2y (-4 + 2y + 2y2) = 0 Solving -4 + 2y + 2y2 = 0 Solving for variable 'y'. Factor out the Greatest Common Factor (GCF), '2'. 2(-2 + y + y2) = 0 Factor a trinomial. 2((-2 + -1y)(1 + -1y)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-2 + -1y)' equal to zero and attempt to solve: Simplifying -2 + -1y = 0 Solving -2 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1y = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1y = 0 + 2 -1y = 0 + 2 Combine like terms: 0 + 2 = 2 -1y = 2 Divide each side by '-1'. y = -2 Simplifying y = -2Subproblem 2
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 = 1Solution
y = {-2, 1}
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