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Simplifying r(5r + -4) = 0 Reorder the terms: r(-4 + 5r) = 0 (-4 * r + 5r * r) = 0 (-4r + 5r2) = 0 Solving -4r + 5r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), 'r'. r(-4 + 5r) = 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 '(-4 + 5r)' equal to zero and attempt to solve: Simplifying -4 + 5r = 0 Solving -4 + 5r = 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 + 5r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 5r = 0 + 4 5r = 0 + 4 Combine like terms: 0 + 4 = 4 5r = 4 Divide each side by '5'. r = 0.8 Simplifying r = 0.8Solution
r = {0, 0.8}
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