What is (2+y)³ written out?

We can use the binomial expansion here, josh4444

(2 + y)^3   =

C(3,0)*2^3 + C(3,1)*(2)^2*y + C(3,2)*(2)*y^2 + C(3,3) y^3  =

2^3 + 3(2)^2*y + 3(2)*y^2 + y^3  =

8 + 12y + 6y^2 + y^3   or, in polynomial form,  y^3 + 6y^2 + 12y + 8