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Simplifying 4r2 = 16r Solving 4r2 = 16r Solving for variable 'r'. Reorder the terms: -16r + 4r2 = 16r + -16r Combine like terms: 16r + -16r = 0 -16r + 4r2 = 0 Factor out the Greatest Common Factor (GCF), '4r'. 4r(-4 + r) = 0 Ignore the factor 4.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 '(-4 + r)' equal to zero and attempt to solve: Simplifying -4 + r = 0 Solving -4 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + r = 0 + 4 r = 0 + 4 Combine like terms: 0 + 4 = 4 r = 4 Simplifying r = 4Solution
r = {0, 4}
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