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Simplifying 9r(5r + -9) = 0 Reorder the terms: 9r(-9 + 5r) = 0 (-9 * 9r + 5r * 9r) = 0 (-81r + 45r2) = 0 Solving -81r + 45r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), '9r'. 9r(-9 + 5r) = 0 Ignore the factor 9.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 '(-9 + 5r)' equal to zero and attempt to solve: Simplifying -9 + 5r = 0 Solving -9 + 5r = 0 Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 5r = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 5r = 0 + 9 5r = 0 + 9 Combine like terms: 0 + 9 = 9 5r = 9 Divide each side by '5'. r = 1.8 Simplifying r = 1.8Solution
r = {0, 1.8}
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