I have a very basic question regarding bollean identites and manipulating them.

Given a 2 input XOR gate, change the SOP expression to the POS expression using the identites.

So I have...

SOP F = A'B +AB'

POS F = (A+B)(A'+B')

I'm given the formulas similar to the http://sandbox.mc.edu/~bennet/cs110/boolalg/rules.html website.

I cannot seem to find a formula that completely matches what I have. I tried multiplying out the POS to get F = AB' + A'B but not sure if that is correct and not sure how I have go from SOP to POS. ANy help would be appeciated.

Tjvelcro