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How do you do?:



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

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