What is (2+y)³ written out ?
$$\small{\text{
$(2+y)^3 = \ ?
$}}\\
\small{\text{
$(2+y)^3 = \textcolor[rgb]{1,0,0}{1} \cdot 2^3 \cdot y^0
+ \textcolor[rgb]{1,0,0}{3} \cdot 2^2 \cdot y^1
+ \textcolor[rgb]{1,0,0}{3} \cdot 2^1 \cdot y^2
+ \textcolor[rgb]{1,0,0}{1} \cdot 2^0 \cdot y^3
$}}\\
\small{\text{
$(2+y)^3 = 8\cdot y^0
+ 12\cdot y^1
+ 6 y^2
+ y^3
$}}\\
\small{\text{
$(2+y)^3 = 8
+ 12 y
+ 6 y^2
+ y^3
$}}\\$$