Question

1)Resolva as potências dos números racionais:

​

Answer 1

Resposta:

$a) {( + \frac{1}{3} })^{2} = \frac{1}{3} \times \frac{1}{3} = \frac{1}{9}$

$b)( - \frac{1}{5} )^{2} = - \frac{1}{5} \times ( - \frac{1}{5}) = \frac{1}{25}$

$c)( + \frac{2}{3} ) ^{2} = \frac{2}{3} \times \frac{2}{3} = \frac{4}{9}$

$d)( - { \frac{3}{7} })^{2} = - \frac{3}{7} \times ( - \frac{3}{7} ) = \frac{9}{49}$

$e)( { \frac{4}{5} })^{2} = \frac{4}{5} \times \frac{4}{5} = \frac{16}{25}$

$f)( - { \frac{3}{2} })^{2} = \frac{3}{2} \times \frac{3}{2} = \frac{9}{4}$