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If (a^2-1)x^2+(a-1)x+a^2-4a+3=0 is ident...

If `(a^2-1)x^2+(a-1)x+a^2-4a+3=0` is identity in `x` , then find the value of `a` .

A

a) `-1`

B

b) `1`

C

c) `3`

D

d) All of the above

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The correct Answer is:
B
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