Найдите знаки множителей: \( \times\) \( a\) ?\( b\) ?\( x\) \( a\cdot x\) \( -b\cdot x\) ?\( y\) \( -a\cdot y\) \( b\cdot y\)

Задание

Найдите знаки множителей:

\(\displaystyle \times\)	\(\displaystyle a\)	[?\|\|-]\(\displaystyle b\)
[?\|\|-]\(\displaystyle x\)	\(\displaystyle a\cdot x\)	\(\displaystyle -b\cdot x\)
[?\|\|-]\(\displaystyle y\)	\(\displaystyle -a\cdot y\)	\(\displaystyle b\cdot y\)