Răspuns:
[tex]( {5}^{22} \div {5}^{22} - {5}^{2} \div 5) \div {2}^{3} =( 1 - 5) \div {2}^{3} = - {2}^{2} \div {2}^{3} = - {2}^{ - 1} = - \frac{1}{2} [/tex]
