(i) ab2 + (a – 1)b – 1
(ii) 2a – 4b – xa + 2bx
Answer :
(i) ab2 + (a – 1)b – 1
Above question can be written as,
ab2 + ab – b – 1
Take out common in all terms,
ab(b + 1) – 1(b + 1)
(b + 1) (ab – 1)
(ii) 2a – 4b – xa + 2bx
2a – 4b – xa + 2bx
Take out common in all terms,
2(a – 2b) – x(a – 2b)
(a – 2b) (2 – x)
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