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Simplifying 2y2 + -7y + 5 = 9 Reorder the terms: 5 + -7y + 2y2 = 9 Solving 5 + -7y + 2y2 = 9 Solving for variable 'y'. Reorder the terms: 5 + -9 + -7y + 2y2 = 9 + -9 Combine like terms: 5 + -9 = -4 -4 + -7y + 2y2 = 9 + -9 Combine like terms: 9 + -9 = 0 -4 + -7y + 2y2 = 0 Factor a trinomial. (-1 + -2y)(4 + -1y) = 0Subproblem 1
Set the factor '(-1 + -2y)' equal to zero and attempt to solve: Simplifying -1 + -2y = 0 Solving -1 + -2y = 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 + -2y = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2y = 0 + 1 -2y = 0 + 1 Combine like terms: 0 + 1 = 1 -2y = 1 Divide each side by '-2'. y = -0.5 Simplifying y = -0.5Subproblem 2
Set the factor '(4 + -1y)' equal to zero and attempt to solve: Simplifying 4 + -1y = 0 Solving 4 + -1y = 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 + -1y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1y = 0 + -4 -1y = 0 + -4 Combine like terms: 0 + -4 = -4 -1y = -4 Divide each side by '-1'. y = 4 Simplifying y = 4Solution
y = {-0.5, 4}
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