Definitely have you sold anything yet.

25 = N squared - 2 Use = in an equation to characterize the notice "is". 2 under a form squared, utilising N through fact the type, could be expressed as N squared - 2. So the equation above could signify the sentence "Twenty-5 is two under the sq. of a form".

The other one.

I like the first one.

'Have you sold anything yet?' is better.

'Have you sale anything yet?' makes no sense.

It's the same thing. You typed the same thing twice...