13- Calcule: e) 11^2 b) 2^4 n((2)/(5))^3 C) 7^3 g ((1)/(2))^5 d) 25^2 ((9)/(5))^2

Vamos calcular cada uma das expressões:<br /><br />a) $11^{2} = 11 \times 11 = 121$<br /><br />b) $2^{4} = 2 \times 2 \times 2 \times 2 = 16$<br /><br />c) $7^{3} = 7 \times 7 \times 7 = 343$<br /><br />d) $25^{2} = 25 \times 25 = 625$<br /><br />e) $(\frac{2}{5})^{3} = \frac{2}{5} \times \frac{2}{5} \times \frac{2}{5} = \frac{8}{125}$<br /><br />f) $(\frac{1}{2})^{5} = \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} = \frac{1}{32}$<br /><br />g) $(\frac{9}{5})^{2} = \frac{9}{5} \times \frac{9}{5} = \frac{81}{25}$<br /><br />Portanto, as respostas corretas são:<br /><br />a) $11^{2} = 121$<br />b) $2^{4} = 16$<br />c) $7^{3} = 343$<br />d) $25^{2} = 625$<br />e) $(\frac{2}{5})^{3} = \frac{8}{125}$<br />f) $(\frac{1}{2})^{5} = \frac{1}{32}$<br />g) $(\frac{9}{5})^{2} = \frac{81}{25}$