Question

-9m×(-⅔mn²) даю 20 балов ​

Answer 1

Ответ:

$- 9m \times ( - \frac{2 \\ }{3} mn { }^{2} ) = 9m \times \frac{2}{3} mn {}^{2} = 3m \times 2mn {}^{2} = 6m {}^{2} n {}^{2}$