Разделите многочлен \(\displaystyle y^{\,2}+6y+8\) на многочлен \(\displaystyle y+4\) в столбик:

\(\displaystyle -\)	\(\displaystyle \phantom{\,\,} y^{\,2}+6y+8\)				\(\displaystyle y+4\)
	[ ]				[ ]
	\(\displaystyle \phantom{ x^{\,2}+} -\)	[ ]
		[ ]
		\(\displaystyle 0\phantom{ x}\)

и запишите разложение:

\(\displaystyle y^{\,2}+6y+8=(\,y+4)\cdot \big(\)[ ]\(\displaystyle \big){\small . }\)