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Simplifying r2 + 15r = 0 Reorder the terms: 15r + r2 = 0 Solving 15r + r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), 'r'. r(15 + r) = 0Subproblem 1
Set the factor 'r' equal to zero and attempt to solve: Simplifying r = 0 Solving r = 0 Move all terms containing r to the left, all other terms to the right. Simplifying r = 0Subproblem 2
Set the factor '(15 + r)' equal to zero and attempt to solve: Simplifying 15 + r = 0 Solving 15 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + r = 0 + -15 Combine like terms: 15 + -15 = 0 0 + r = 0 + -15 r = 0 + -15 Combine like terms: 0 + -15 = -15 r = -15 Simplifying r = -15Solution
r = {0, -15}
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