function + default argument

Question

i am wondering why i keep getting a wrong sum when i call "shuttle ()" in the code below
https://code.sololearn.com/cNYePLBqU2j8/?ref=app

Answer 1

Well, the sum is correct.
When you call your function without arguments, it takes default (3+4).
so x = (6**2)*(3+4) = 252

Answer 2

thanks. that made clearer. My initial thought was that it was gonna return only the sum in the bracket i.e. 3+4