f: \(3ab-6a+b-2\)
\(=3a\left(b-2\right)+\left(b-2\right)\)
\(=\left(b-2\right)\left(3a+1\right)\)
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f: \(3ab-6a+b-2\)
\(=3a\left(b-2\right)+\left(b-2\right)\)
\(=\left(b-2\right)\left(3a+1\right)\)