Q. 253.8( 37 Votes )

Factories:

ab2 + (a – 1)b -1

Answer :

ab2 + (a – 1)b -1


= ab2 + ba – b – 1


= (ab2 + ba) – (b + 1)


= ab (b + 1) - 1(b + 1)


= (b + 1)(ab – 1)


So we get,


ab2 + (a – 1)b -1 = (b + 1)(ab – 1)


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