Răspuns:
[tex] {3}^{20} \div {9}^{10} - ( {2}^{4} ) ^{0} = \\ {3}^{20} \div ( {3}^{2} ) ^{10} - {2}^{0} = \\ {3}^{20} \div {3}^{20} - 1 = \\ 1 - 1 = 0[/tex]
