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]
