ab - a - b + 1 = ? A. (1 - a)(1 - b) B. (1 - a)(b - 1) C. (a - 1)(b

1.	ab - a - b + 1 = ? A. (1 - a)(1 - b) B. (1 - a)(b - 1) C. (a - 1)(b - 1) D. (a - 1)(1 - b.)
Answer» ab - a - b + 1Taking 'a' as common from first two terms of the above polynomial. = a(b - 1) - (b - 1) Taking (b - 1) as common, in the above equation = (b - 1)(a - 1)= (a - 1)(b - 1)

ab - a - b + 1 = ? A. (1 - a)(1 - b) B. (1 - a)(b - 1) C. (a - 1)(b - 1) D. (a - 1)(1 - b.)

Answer»

ab - a - b + 1Taking 'a' as common from first two terms of the above polynomial.

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

Taking (b - 1) as common, in the above equation

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

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