Is 2xy the same as 2x2y?

Answer 1

yes

* * * * *

No, it isn't.

2xy = 2 times x times y.

Depending on which you mean:

2x2y = 2 times x times 2 times y = 4xy;

OR

2x2y = 2 times x times x times y.

Answer 2

Well, honey, technically speaking, no, they're not the same. 2xy means 2 times x times y, while 2x2y means 2 times x times 2 times y. So, unless x is equal to 2, those expressions ain't equal. But hey, nice try!