For each statement below find which is true or false. If false state why is it false.

1. ac (ac2+ + 4 ) A B x2-4 where A, B are constant a +2 x-2 (202 + 4) 2. B C = A + ac (2 -4) 2 + 2 x -2 3. 2 2 - 4 B Ca+D = A ac (20 2 + 4 ) ac 2 + 2 where A B C D are (2 + 2) 2 constant in all abovel