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\frac{\left(r-5\right)\left(-r-2\right)}{\left(r+2\right)r^{3}}
Factor the expressions that are not already factored.
\frac{-\left(r-5\right)\left(r+2\right)}{\left(r+2\right)r^{3}}
Extract the negative sign in -2-r.
\frac{-\left(r-5\right)}{r^{3}}
Cancel out r+2 in both numerator and denominator.
\frac{-r+5}{r^{3}}
Expand the expression.
\frac{\left(r-5\right)\left(-r-2\right)}{\left(r+2\right)r^{3}}
Factor the expressions that are not already factored.
\frac{-\left(r-5\right)\left(r+2\right)}{\left(r+2\right)r^{3}}
Extract the negative sign in -2-r.
\frac{-\left(r-5\right)}{r^{3}}
Cancel out r+2 in both numerator and denominator.
\frac{-r+5}{r^{3}}
Expand the expression.