Factor
\left(p+9\right)\left(s+4\right)
Evaluate
\left(p+9\right)\left(s+4\right)
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s\left(p+9\right)+4\left(p+9\right)
Do the grouping ps+9s+4p+36=\left(ps+9s\right)+\left(4p+36\right), and factor out s in the first and 4 in the second group.
\left(p+9\right)\left(s+4\right)
Factor out common term p+9 by using distributive property.
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