Răspuns:
a)
[tex] {2}^{6} = 2 \times 2 \times 2 \times 2 \times 2 \times 2 = 64[/tex]
[tex] {5}^{3} = 5 \times 5 \times 5 = 125[/tex]
[tex] {19}^{1} = 19[/tex]
[tex] {18}^{2} = 18 \times 18 = 324[/tex]
[tex] { \frac{1}{2} }^{2} = \frac{ {1}^{2} }{ {2}^{2} } = \frac{1}{4} [/tex]
[tex] { \frac{1}{5} }^{2} = \frac{ {1}^{2} }{ {5}^{2} } = \frac{1}{25} [/tex]
[tex] { \frac{3}{4} }^{2} = \frac{ {3}^{2} }{ {4}^{2} } = \frac{9}{16} [/tex]
[tex] {2 \frac{1}{2} }^{2} = { \frac{5}{2} }^{2} = \frac{25}{4} [/tex]
