Question

Help!!!!!!!

Let f(x)=x^2+1 and g(x)=x^4-1. Find f•g.

A)x^4+x^2-1

B)x^6-x^2-1

C)x^8+x^4-x^2+1

D)x^6+x^4-x^2-1

Answer 1

f(x)=x^2+1
g(x)=x^4-1

f(x) x g(x)=(x^2+1)(x^4-1)
=x^6-x^2+x^4-1
f(x) x g(x)=x^6 + x^4 - x^2 -1

D.