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Simplifying 28y2 + 29y + -9 = 0 Reorder the terms: -9 + 29y + 28y2 = 0 Solving -9 + 29y + 28y2 = 0 Solving for variable 'y'. Factor a trinomial. (-9 + -7y)(1 + -4y) = 0Subproblem 1
Set the factor '(-9 + -7y)' equal to zero and attempt to solve: Simplifying -9 + -7y = 0 Solving -9 + -7y = 0 Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -7y = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -7y = 0 + 9 -7y = 0 + 9 Combine like terms: 0 + 9 = 9 -7y = 9 Divide each side by '-7'. y = -1.285714286 Simplifying y = -1.285714286Subproblem 2
Set the factor '(1 + -4y)' equal to zero and attempt to solve: Simplifying 1 + -4y = 0 Solving 1 + -4y = 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 + -4y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4y = 0 + -1 -4y = 0 + -1 Combine like terms: 0 + -1 = -1 -4y = -1 Divide each side by '-4'. y = 0.25 Simplifying y = 0.25Solution
y = {-1.285714286, 0.25}
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