Question

How do you do?:

x^2+1
-----
x^4-1

Thanks!

Try to factor wherever you can so you can reduce as much as you can.

Factors of x^4 - 1 are (x^2 + 1)(x^2 - 1).

Now we have:

x^2 + 1
------------------
(x^2 + 1)(x^2 - 1)

Do you see a common factor to cancel out in both the numerator (top) and denominator (bottom) to reduce this fraction?

I hope this will help.

oh, wow, thanks

it would be x^2-1