(wx-y)^2

(wx-y)^2 can be expanded using the distributive property as follows:

(wx-y)^2 = (wx-y)(wx-y)

Using the FOIL method, we can expand the expression:

(wx-y)(wx-y) = (wx)^2 - wxy - wxy + y^2

This simplifies to:

(wx-y)^2 = w^2x^2 - 2wxy + y^2