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Simplifying 9 + (r + -5) * r = 33 Reorder the terms: 9 + (-5 + r) * r = 33 Reorder the terms for easier multiplication: 9 + r(-5 + r) = 33 9 + (-5 * r + r * r) = 33 9 + (-5r + r2) = 33 Solving 9 + -5r + r2 = 33 Solving for variable 'r'. Reorder the terms: 9 + -33 + -5r + r2 = 33 + -33 Combine like terms: 9 + -33 = -24 -24 + -5r + r2 = 33 + -33 Combine like terms: 33 + -33 = 0 -24 + -5r + r2 = 0 Factor a trinomial. (-3 + -1r)(8 + -1r) = 0Subproblem 1
Set the factor '(-3 + -1r)' equal to zero and attempt to solve: Simplifying -3 + -1r = 0 Solving -3 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1r = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1r = 0 + 3 -1r = 0 + 3 Combine like terms: 0 + 3 = 3 -1r = 3 Divide each side by '-1'. r = -3 Simplifying r = -3Subproblem 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 = {-3, 8}
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