Задание
Найдите знаки множителей:
| \(\displaystyle \times\) | [?||-]\(\displaystyle 1\) | [?||-]\(\displaystyle 3\) |
|---|---|---|
| [?||-]\(\displaystyle 2\) | \(\displaystyle -2\) | \(\displaystyle 6\) |
| \(\displaystyle -5\) | \(\displaystyle -5\) | \(\displaystyle 15\) |