Question

expand (x + 3)^6 with pascal's triangle

Answer 1

So first of all, what is Pascal's triangle down to the 6th level?
1
1 1
1 2 1
...

Answer 2

(Notice that "1" is the "zero-th" level; "1 1" is the first level; "1 2 1" is the second level.)

Answer 3

-----?

Answer 4

If you don't engage I'll go away.