What is int (x^(4) -1)/(x^(2) sqrt(x^(4)...

What is `int (x^(4) -1)/(x^(2) sqrt(x^(4) + x^(2) + 1)) dx` equal to ?

A

`(x)/(sqrt(x^(4)+x^(2)+1))+C`

B

`(sqrt(x^(4)+x^(2)+1))/(x)+C`

C

`(2x)/(sqrt(x^(4)+x^(2)+1))+C`

D

`(sqrt(x^(4)+x^(2)+1))/(2x)+C`

Verified by Experts

The correct Answer is:

b

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