Factor
\left(r-s\right)\left(8p+3q\right)
Evaluate
\left(r-s\right)\left(8p+3q\right)
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8p\left(r-s\right)+3q\left(r-s\right)
Do the grouping 8pr-8ps+3qr-3qs=\left(8pr-8ps\right)+\left(3qr-3qs\right), and factor out 8p in the first and 3q in the second group.
\left(r-s\right)\left(8p+3q\right)
Factor out common term r-s by using distributive property.
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