Răspuns:
a.
[tex] ({4}^{11} \times {4}^{20} \times {5}^{20} ) \div ({2}^{16} \times {5}^{3} \times {2}^{15} \times {5}^{7} ) ^{2} + {2}^{3} + 1 = \\ ( {4}^{31} \times {5}^{20} ) \div ( {2}^{31 } \times {5}^{10} ) ^{2} + {2}^{3} + 1 = \\ ( {2}^{62} \times {5}^{20} ) \div ( {2}^{62} \times {5}^{20} ) + 9 = \\ 1 + 9 = 10[/tex]
