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Simplifying 2r2 + -20r = 0 Reorder the terms: -20r + 2r2 = 0 Solving -20r + 2r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), '2r'. 2r(-10 + r) = 0 Ignore the factor 2.Subproblem 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 '(-10 + r)' equal to zero and attempt to solve: Simplifying -10 + r = 0 Solving -10 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + r = 0 + 10 Combine like terms: -10 + 10 = 0 0 + r = 0 + 10 r = 0 + 10 Combine like terms: 0 + 10 = 10 r = 10 Simplifying r = 10Solution
r = {0, 10}
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