Question

Which is the correct statement in the following? [ ]
A) ab – a – b + 1 = (1 + a)(1 – b) B) ab – a – b + 1 = (a – 1)(b – 1)
C) ab – a – b + 1 = (1 – a)(b + 1) D) ab – a – b + 1 = (a – 1)(1 – b)

Answer 1

option B) is correct

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