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Simplifying r2 + 28r = 0 Reorder the terms: 28r + r2 = 0 Solving 28r + r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), 'r'. r(28 + 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 '(28 + r)' equal to zero and attempt to solve: Simplifying 28 + r = 0 Solving 28 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + r = 0 + -28 Combine like terms: 28 + -28 = 0 0 + r = 0 + -28 r = 0 + -28 Combine like terms: 0 + -28 = -28 r = -28 Simplifying r = -28Solution
r = {0, -28}
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