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Simplifying (13 + -2r)(13 + -1r) = 24 Multiply (13 + -2r) * (13 + -1r) (13(13 + -1r) + -2r * (13 + -1r)) = 24 ((13 * 13 + -1r * 13) + -2r * (13 + -1r)) = 24 ((169 + -13r) + -2r * (13 + -1r)) = 24 (169 + -13r + (13 * -2r + -1r * -2r)) = 24 (169 + -13r + (-26r + 2r2)) = 24 Combine like terms: -13r + -26r = -39r (169 + -39r + 2r2) = 24 Solving 169 + -39r + 2r2 = 24 Solving for variable 'r'. Reorder the terms: 169 + -24 + -39r + 2r2 = 24 + -24 Combine like terms: 169 + -24 = 145 145 + -39r + 2r2 = 24 + -24 Combine like terms: 24 + -24 = 0 145 + -39r + 2r2 = 0 Factor a trinomial. (5 + -1r)(29 + -2r) = 0Subproblem 1
Set the factor '(5 + -1r)' equal to zero and attempt to solve: Simplifying 5 + -1r = 0 Solving 5 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1r = 0 + -5 -1r = 0 + -5 Combine like terms: 0 + -5 = -5 -1r = -5 Divide each side by '-1'. r = 5 Simplifying r = 5Subproblem 2
Set the factor '(29 + -2r)' equal to zero and attempt to solve: Simplifying 29 + -2r = 0 Solving 29 + -2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-29' to each side of the equation. 29 + -29 + -2r = 0 + -29 Combine like terms: 29 + -29 = 0 0 + -2r = 0 + -29 -2r = 0 + -29 Combine like terms: 0 + -29 = -29 -2r = -29 Divide each side by '-2'. r = 14.5 Simplifying r = 14.5Solution
r = {5, 14.5}
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