Question

Simplify the rational expression. State any restrictions on the variable.

Answer 1

@IMStuck

Answer 2

@dan815 @phi

Answer 3

First, for the restriction, n^4-9n^2+18 shoud be different from 0. So when you solve n^4-9n^2+18=0 for n, you'll find the values that n can't take. For simplifying, you'll need to factor both nominator and denominator then find common factors.

Answer 4

Not sure how to do that...