Yes, yes, I know: One should not respond to posts without any attempt by the OP and obviously without any reference to Mathematica. But it is just too tempting!
In[2]:= data = {{2, 6}, {4, 20}, {7, 56}, {10, 110}};
In[3]:= FindFormula[data, x]
Out[3]= 1. x + 1. x^2.
Isn't Mathematica just great ?!?
