Question 1081837
{{{(2x+4)^4=sum(C(4,k)*(2x)^k*y^(4-k),k=0,4)}}}
with
{{{C(4,0)=1}}}
{{{C(4,1)=4}}}
{{{C(4,2)=6}}}
{{{C(4,3)=4}}}
{{{C(4,4)=1}}}
and
{{{(2x)^0*y^4}}}
{{{(2x)^1*y^3}}}
{{{(2x)^2*y^2}}}
{{{(2x)^3*y^1}}}
{{{(2x)^4*y^0}}}