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Simplifying r(r) + 8r = 48 Multiply r * r r2 + 8r = 48 Reorder the terms: 8r + r2 = 48 Solving 8r + r2 = 48 Solving for variable 'r'. Reorder the terms: -48 + 8r + r2 = 48 + -48 Combine like terms: 48 + -48 = 0 -48 + 8r + r2 = 0 Factor a trinomial. (-12 + -1r)(4 + -1r) = 0Subproblem 1
Set the factor '(-12 + -1r)' equal to zero and attempt to solve: Simplifying -12 + -1r = 0 Solving -12 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1r = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1r = 0 + 12 -1r = 0 + 12 Combine like terms: 0 + 12 = 12 -1r = 12 Divide each side by '-1'. r = -12 Simplifying r = -12Subproblem 2
Set the factor '(4 + -1r)' equal to zero and attempt to solve: Simplifying 4 + -1r = 0 Solving 4 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1r = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1r = 0 + -4 -1r = 0 + -4 Combine like terms: 0 + -4 = -4 -1r = -4 Divide each side by '-1'. r = 4 Simplifying r = 4Solution
r = {-12, 4}
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