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Simplifying r(r + 2)(r + -1) = 0 Reorder the terms: r(2 + r)(r + -1) = 0 Reorder the terms: r(2 + r)(-1 + r) = 0 Multiply (2 + r) * (-1 + r) r(2(-1 + r) + r(-1 + r)) = 0 r((-1 * 2 + r * 2) + r(-1 + r)) = 0 r((-2 + 2r) + r(-1 + r)) = 0 r(-2 + 2r + (-1 * r + r * r)) = 0 r(-2 + 2r + (-1r + r2)) = 0 Combine like terms: 2r + -1r = 1r r(-2 + 1r + r2) = 0 (-2 * r + 1r * r + r2 * r) = 0 (-2r + 1r2 + r3) = 0 Solving -2r + 1r2 + r3 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), 'r'. r(-2 + r + r2) = 0 Factor a trinomial. r((-2 + -1r)(1 + -1r)) = 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 '(-2 + -1r)' equal to zero and attempt to solve: Simplifying -2 + -1r = 0 Solving -2 + -1r = 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 + -1r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1r = 0 + 2 -1r = 0 + 2 Combine like terms: 0 + 2 = 2 -1r = 2 Divide each side by '-1'. r = -2 Simplifying r = -2Subproblem 3
Set the factor '(1 + -1r)' equal to zero and attempt to solve: Simplifying 1 + -1r = 0 Solving 1 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1r = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1r = 0 + -1 -1r = 0 + -1 Combine like terms: 0 + -1 = -1 -1r = -1 Divide each side by '-1'. r = 1 Simplifying r = 1Solution
r = {0, -2, 1}
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