Разделите многочлен \(\displaystyle y^{\,3}+5y^{\,2}+y-15\) на многочлен \(\displaystyle y+3\) в столбик:

\(\displaystyle -\)	\(\displaystyle \phantom{\,\,}y^{\,3}+5y^{\,2}+y-15\)				\(\displaystyle y+3\)
	[ ]				[ ]
	\(\displaystyle \phantom{xx}-\)	[ ]
		[ ]
		\(\displaystyle \phantom{ x} -\)		[ ]
				[ ]
				\(\displaystyle 0\)

и запишите разложение:

\(\displaystyle y^{\,3}+5y^{\,2}+y-15=(\,y+3)\cdot \big(\)[ ]\(\displaystyle \big).\)