B.O.B. on Identities

I truly thought that this unit was by far the hardest so far. I didn't comprehend ANY concepts, especially anything involving how to prove something. My absolute muddiest point were the double angles and proving. The only thing I grasped with ease was the dance that Mr.K showed us. I'm studying my yahoo off for this test. Good to luck everybody! Not, because I need it most. Just kidding.