(7/10)³ = 7/10 x 7/10 x 7/10 = 343/1000
Resolução abaixo:
(7/10)³ = 7/10 x 7/10 x 7/10 -----> (iremos resolver isto.)
[tex]\frac{7\times 7}{10\times 10}\times \left(\frac{7}{10}\right) \\ \\ \frac{49}{100}\times \left(\frac{7}{10}\right) \\ \\ \frac{49\times 7}{100\times 10} \\ \\ \frac{343}{1000} [/tex]
