A) -1
B) 0
C) 1
D) 2
Correct Answer: A
Solution :
[a] \[ab-b+1=0\Rightarrow abc-bc+c=0\] \[bc-c+1=0\Rightarrow \text{ }abc\,\,-\text{ }ac+a=0\] On subtraction, we have \[ac-a=-\text{ }bc+c=-1\Rightarrow ac-\text{ }a=-\text{ }1.\]You need to login to perform this action.
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