Factor
\left(m+4\right)\left(a+b\right)
Evaluate
\left(m+4\right)\left(a+b\right)
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m\left(a+b\right)+4\left(a+b\right)
Do the grouping ma+mb+4a+4b=\left(ma+mb\right)+\left(4a+4b\right), and factor out m in the first and 4 in the second group.
\left(a+b\right)\left(m+4\right)
Factor out common term a+b by using distributive property.
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