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Simplifying 21y2 + -17y + -8 = 0 Reorder the terms: -8 + -17y + 21y2 = 0 Solving -8 + -17y + 21y2 = 0 Solving for variable 'y'. Factor a trinomial. (-1 + -3y)(8 + -7y) = 0Subproblem 1
Set the factor '(-1 + -3y)' equal to zero and attempt to solve: Simplifying -1 + -3y = 0 Solving -1 + -3y = 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 + -3y = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -3y = 0 + 1 -3y = 0 + 1 Combine like terms: 0 + 1 = 1 -3y = 1 Divide each side by '-3'. y = -0.3333333333 Simplifying y = -0.3333333333Subproblem 2
Set the factor '(8 + -7y)' equal to zero and attempt to solve: Simplifying 8 + -7y = 0 Solving 8 + -7y = 0 Move all terms containing y to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -7y = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -7y = 0 + -8 -7y = 0 + -8 Combine like terms: 0 + -8 = -8 -7y = -8 Divide each side by '-7'. y = 1.142857143 Simplifying y = 1.142857143Solution
y = {-0.3333333333, 1.142857143}
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