The factorisation of ab – a – b + 1 is
Answer & explanation
Correct answer: option 1
ab – a – b + 1
Taking 'a' common from the first two terms:
= a (b - 1) -1 (b - 1)
= (a - 1) (b - 1)
The factorisation of ab – a – b + 1 is
Correct answer: option 1
ab – a – b + 1
Taking 'a' common from the first two terms:
= a (b - 1) -1 (b - 1)
= (a - 1) (b - 1)