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Choose the correct alternative answer fo...

Choose the correct alternative answer for each of the following questions :
If `m=x+1/x` and `n=x-1/x` , then `m^2-n^2=` ?

A

2

B

4

C

`x^2-1/x^2`

D

`2x^2-2/x^2`

Text Solution

Verified by Experts

The correct Answer is:
B
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