Discussion
For all real numbers a and b, where a · b ≠ 0, let 
, which of the following must be true?
| (A) | |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 01/25/2015 13:16
Is The explanation for (c) correct? The equation on both sides of the equal sign are equal. Am I reading this incorrectly?