Find the indicated term of each expression: seventh term of (x+y)^12

I just have no idea how to go about this, please help.

An=12Cn*x^(12-n)*y^n,

n=0,1,2,3,...,12

A6=12C6*x^6*y^6
12C6=924

BTW, mCn=m!/(n!(m-n)!)