Why do people have to be so stupid?
No offense to her, but Mom is working on her math homework. She has a problem like (x - z)2, and she swears that it should be written out as x2 - z2. Given my memory of such problems, that is not how it is to be written. Does she care? NO! She just keeps telling me that whatever I say is wrong, even when she asks me if her way is the correct way.
Edit: She emailed someone and asked them how to do it, and they told her the same thing I tried to...
(x - z)(x - z) FOIL x2 - 2xz + z2
:)
Just turn and slowly back away...