Factor
\left(a-2\right)\left(a-4b\right)
Evaluate
\left(a-2\right)\left(a-4b\right)
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a\left(a-4b\right)-2\left(a-4b\right)
Do the grouping a^{2}-4ab+8b-2a=\left(a^{2}-4ab\right)+\left(8b-2a\right), and factor out a in the first and -2 in the second group.
\left(a-4b\right)\left(a-2\right)
Factor out common term a-4b by using distributive property.
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