Question

Simplify the rational expression. State any restrictions on the variable
Simplify the rational expression. State any restrictions on the variable.
n^4-11n^2+30/n^4-7n^2+10
a.n^2-6/n^2-2;n=+-√5,n=+-√2
b.n^2-6/n^2-2;n=5,n=2
c.-(n^2-6)/n^2-2;n=+-√5,n=+-√2
d.n^2-6/n^2-2;n=5,n=-2