Question

a)1/5×2/3. b) (-2/3) la puterea 3​

Answer 1

$a. \: \: \: \: \frac{1}{5} \times \frac{2}{3} = \frac{1 \times 2}{5 \times 3} = \frac{2}{15} \\ \\ b. \: \: \: \: ( - \frac{2}{3} ) {}^{3} = - \frac{2}{3} \times ( - \frac{2}{3} ) \times ( - \frac{2}{3} ) = \\ \\ = - \frac{2 \times 2 \times 2}{3 \times 3 \times 3} = - \frac{8}{27}$

Answer 2

Răspuns:

Explicație pas cu pas: