Question

(i)Find the product:
(x2 - 1) (x ^4+ x^2 + 1)​

Answer 1

=x2(x^4+x^2+1)-1(x^4+x^2+1)

=(x^8+x^4+x^2)-(x^4-x^2-1)

Answer=x^8-1 (because x^4&x^2 can be cancelled)