Factorize:

a3b – a2b + 5ab – 5b

We have,



At first we’ll take common from the expression


= a2b (a – 1) + 5b (a – 1)


= (a – 1) (a2b + 5b)


= (a – 1) b (a2 + 5)


= b (a – 1) (a2 + 5)


Hence,


The given expression can be factorized as:



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