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Simplifying 6r2 + -43r + -40 = 0 Reorder the terms: -40 + -43r + 6r2 = 0 Solving -40 + -43r + 6r2 = 0 Solving for variable 'r'. Factor a trinomial. (-5 + -6r)(8 + -1r) = 0Subproblem 1
Set the factor '(-5 + -6r)' equal to zero and attempt to solve: Simplifying -5 + -6r = 0 Solving -5 + -6r = 0 Move all terms containing r to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -6r = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -6r = 0 + 5 -6r = 0 + 5 Combine like terms: 0 + 5 = 5 -6r = 5 Divide each side by '-6'. r = -0.8333333333 Simplifying r = -0.8333333333Subproblem 2
Set the factor '(8 + -1r)' equal to zero and attempt to solve: Simplifying 8 + -1r = 0 Solving 8 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1r = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1r = 0 + -8 -1r = 0 + -8 Combine like terms: 0 + -8 = -8 -1r = -8 Divide each side by '-1'. r = 8 Simplifying r = 8Solution
r = {-0.8333333333, 8}
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