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Simplifying r2 = 54 + -3r Solving r2 = 54 + -3r Solving for variable 'r'. Reorder the terms: -54 + 3r + r2 = 54 + -3r + -54 + 3r Reorder the terms: -54 + 3r + r2 = 54 + -54 + -3r + 3r Combine like terms: 54 + -54 = 0 -54 + 3r + r2 = 0 + -3r + 3r -54 + 3r + r2 = -3r + 3r Combine like terms: -3r + 3r = 0 -54 + 3r + r2 = 0 Factor a trinomial. (-9 + -1r)(6 + -1r) = 0Subproblem 1
Set the factor '(-9 + -1r)' equal to zero and attempt to solve: Simplifying -9 + -1r = 0 Solving -9 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1r = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1r = 0 + 9 -1r = 0 + 9 Combine like terms: 0 + 9 = 9 -1r = 9 Divide each side by '-1'. r = -9 Simplifying r = -9Subproblem 2
Set the factor '(6 + -1r)' equal to zero and attempt to solve: Simplifying 6 + -1r = 0 Solving 6 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1r = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1r = 0 + -6 -1r = 0 + -6 Combine like terms: 0 + -6 = -6 -1r = -6 Divide each side by '-1'. r = 6 Simplifying r = 6Solution
r = {-9, 6}
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