Question

(x^4n - 16) * (x^n - 2) * (x^2n + 4) * (x^n + 2)

Answer 1

(x^4n - 16) * (x^n - 2) * (x^2n + 4) * (x^n + 2)

=(x^4n - 16) * (x^2n + 4) * (x^n + 2)* (x^n - 2)

=(x^4n-16)*(x^2n+4)(x^2n-4)

=(x^4n-16)*(x^4n-16)

=(x^4n-16)^2

=x^8n-32x^4n+256