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Simplifying 2y + 2 + (y + 1)(y + -1) + -4 = 0 Reorder the terms: 2y + 2 + (1 + y)(y + -1) + -4 = 0 Reorder the terms: 2y + 2 + (1 + y)(-1 + y) + -4 = 0 Multiply (1 + y) * (-1 + y) 2y + 2 + (1(-1 + y) + y(-1 + y)) + -4 = 0 2y + 2 + ((-1 * 1 + y * 1) + y(-1 + y)) + -4 = 0 2y + 2 + ((-1 + 1y) + y(-1 + y)) + -4 = 0 2y + 2 + (-1 + 1y + (-1 * y + y * y)) + -4 = 0 2y + 2 + (-1 + 1y + (-1y + y2)) + -4 = 0 Combine like terms: 1y + -1y = 0 2y + 2 + (-1 + 0 + y2) + -4 = 0 2y + 2 + (-1 + y2) + -4 = 0 Reorder the terms: 2 + -1 + -4 + 2y + y2 = 0 Combine like terms: 2 + -1 = 1 1 + -4 + 2y + y2 = 0 Combine like terms: 1 + -4 = -3 -3 + 2y + y2 = 0 Solving -3 + 2y + y2 = 0 Solving for variable 'y'. Factor a trinomial. (-3 + -1y)(1 + -1y) = 0Subproblem 1
Set the factor '(-3 + -1y)' equal to zero and attempt to solve: Simplifying -3 + -1y = 0 Solving -3 + -1y = 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 + -1y = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1y = 0 + 3 -1y = 0 + 3 Combine like terms: 0 + 3 = 3 -1y = 3 Divide each side by '-1'. y = -3 Simplifying y = -3Subproblem 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 = {-3, 1}
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