Question 382748
Do two more rows
1 
1 1
1 2 1
1 3 3 1
1 4 6 4 1 
1 5 10 10 5 1
1 6 15 20 15 6 1
So then you have the coefficients, then get the terms,
{{{1(2x)^6(1)^(0)=64x^6}}}
{{{6(2x)^5(1)^(1)=192x^5}}}
{{{15(2x)^4(1)^(2)=240x^4}}}
{{{20(2x)^3(1)^(3)=160x^3}}}
{{{15(2x)^2(1)^(4)=60x^2}}}
{{{6(2x)^1(1)^(5)=12x}}}
{{{1(2x)^0(1)^(6)=1}}}
.
.
{{{(2x+1)^6 =64x^6+192x^5+240x^4+160x^3+60x^2+12x+1
}}}