Question

Упростить 2а×(-4)
-3ху×(-2)
2/5аb×5a

Answer 1

$2a \times ( - 4) = - 8a$

$- 3xy \times ( - 2) = 6xy$

$\frac{2}{5ab} \times 5a = \frac{2}{b}$

или

$\frac{2}{5} ab \times 5a = 2 {a}^{2} b$