Math, asked by harpreet71203, 6 months ago

The factorisation of ab – a – b + 1 is (A) (a – 1)(b – 1) (B) (a + 1)(b + 1) (C) (a – 1)(b + 1) (D) (a + 1)(b – 1)

Answers

Answered by kurildurgesh

4

Answer:

(A) (a - 1)(b - 1)

Step-by-step explanation:

sol: (a - 1)(b - 1)

= a(b - 1) - 1(b - 1)

= ab -a - b + 1

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