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Simplifying r2 + 18r = 0 Reorder the terms: 18r + r2 = 0 Solving 18r + r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), 'r'. r(18 + 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 '(18 + r)' equal to zero and attempt to solve: Simplifying 18 + r = 0 Solving 18 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + r = 0 + -18 Combine like terms: 18 + -18 = 0 0 + r = 0 + -18 r = 0 + -18 Combine like terms: 0 + -18 = -18 r = -18 Simplifying r = -18Solution
r = {0, -18}
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