Question

Solve (1 + X) (1 + x ^2) ( 1 + X ^4) (1 + X ^ 8)( 1 - X

Answer 1

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

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

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

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

=1-x^16