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Simplifying 5r2 = 36r + 32 Reorder the terms: 5r2 = 32 + 36r Solving 5r2 = 32 + 36r Solving for variable 'r'. Reorder the terms: -32 + -36r + 5r2 = 32 + 36r + -32 + -36r Reorder the terms: -32 + -36r + 5r2 = 32 + -32 + 36r + -36r Combine like terms: 32 + -32 = 0 -32 + -36r + 5r2 = 0 + 36r + -36r -32 + -36r + 5r2 = 36r + -36r Combine like terms: 36r + -36r = 0 -32 + -36r + 5r2 = 0 Factor a trinomial. (-4 + -5r)(8 + -1r) = 0Subproblem 1
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 = -0.8Subproblem 2
Set the factor '(8 + -1r)' equal to zero and attempt to solve: Simplifying 8 + -1r = 0 Solving 8 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1r = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1r = 0 + -8 -1r = 0 + -8 Combine like terms: 0 + -8 = -8 -1r = -8 Divide each side by '-1'. r = 8 Simplifying r = 8Solution
r = {-0.8, 8}
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