Question

(x+1)(x-1)(x la a doua +1)(x la a 4 +1)

Answer 1

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

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

$=(x^4-1)(x^4+1)=$

$=x^8-1$