Разделите многочлен \(\displaystyle y^{\,3}+6y^{\,2}+2y-21\) на многочлен \(\displaystyle y^{\,2}+3y-7\) в столбик:

\(\displaystyle -\)	\(\displaystyle \phantom{\,\,}y^{\,3}+6y^{\,2}+2y-21\)				\(\displaystyle y^{\,2}+3y-7\)
	[ ]				[ ]
	\(\displaystyle \phantom{ x\,\,} -\)	[ ]
		[ ]
		\(\displaystyle 0\phantom{ x}\)

и запишите разложение:

\(\displaystyle y^{\,3}+6y^{\,2}+2y-21=(\,y^{\,2}+3y-7)\cdot \big(\)[ ]\(\displaystyle \big){\small . }\)