Odpowiedź :
Hej!
[tex](a - 1)(a + 1)( {a}^{2} + 1)( {a}^{4} + 1)( {a}^{8} + 1) - {a}^{16} = \\ \\ = ( {a}^{2} - 1)( {a}^{2} + 1)( {a}^{4} + 1)( {a}^{8} + 1) - {a}^{16} = \\ \\ = ( {a}^{4} - 1)( {a}^{4} + 1)( {a}^{8} + 1) - {a}^{16} = \\ \\ ( {a}^{8} - 1)( {a}^{8} + 1) - {a} ^{16} = {a}^{16} - 1 - {a}^{16} = - 1[/tex]
Odp. A
Pozdrawiam! - Julka