a b-a-b+1=? - Vidyadip

MCQ

$a b-a-b+1=?$

✓
$(a-1)(b-1)$
B
$(1-a)(1-b)$
C
$(a-1)(1-b)$
D
$(1-a)(b-1)$

✓

Answer

Correct option: A.

$(a-1)(b-1)$

A

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