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Simplifying r2 = 7 + -6r Solving r2 = 7 + -6r Solving for variable 'r'. Reorder the terms: -7 + 6r + r2 = 7 + -6r + -7 + 6r Reorder the terms: -7 + 6r + r2 = 7 + -7 + -6r + 6r Combine like terms: 7 + -7 = 0 -7 + 6r + r2 = 0 + -6r + 6r -7 + 6r + r2 = -6r + 6r Combine like terms: -6r + 6r = 0 -7 + 6r + r2 = 0 Factor a trinomial. (-7 + -1r)(1 + -1r) = 0Subproblem 1
Set the factor '(-7 + -1r)' equal to zero and attempt to solve: Simplifying -7 + -1r = 0 Solving -7 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1r = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1r = 0 + 7 -1r = 0 + 7 Combine like terms: 0 + 7 = 7 -1r = 7 Divide each side by '-1'. r = -7 Simplifying r = -7Subproblem 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 = {-7, 1}
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