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Simplifying 7r2 + 7 = 14r Reorder the terms: 7 + 7r2 = 14r Solving 7 + 7r2 = 14r Solving for variable 'r'. Reorder the terms: 7 + -14r + 7r2 = 14r + -14r Combine like terms: 14r + -14r = 0 7 + -14r + 7r2 = 0 Factor out the Greatest Common Factor (GCF), '7'. 7(1 + -2r + r2) = 0 Factor a trinomial. 7((1 + -1r)(1 + -1r)) = 0 Ignore the factor 7.Subproblem 1
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 = 1Subproblem 2
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 = {1, 1}
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