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Simplifying 6r2 + 20 = -34r Reorder the terms: 20 + 6r2 = -34r Solving 20 + 6r2 = -34r Solving for variable 'r'. Reorder the terms: 20 + 34r + 6r2 = -34r + 34r Combine like terms: -34r + 34r = 0 20 + 34r + 6r2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(10 + 17r + 3r2) = 0 Factor a trinomial. 2((5 + r)(2 + 3r)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(5 + r)' equal to zero and attempt to solve: Simplifying 5 + r = 0 Solving 5 + r = 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 + r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + r = 0 + -5 r = 0 + -5 Combine like terms: 0 + -5 = -5 r = -5 Simplifying r = -5Subproblem 2
Set the factor '(2 + 3r)' equal to zero and attempt to solve: Simplifying 2 + 3r = 0 Solving 2 + 3r = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3r = 0 + -2 3r = 0 + -2 Combine like terms: 0 + -2 = -2 3r = -2 Divide each side by '3'. r = -0.6666666667 Simplifying r = -0.6666666667Solution
r = {-5, -0.6666666667}
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