Hi Everyone, Does anyone understand the special A and B problem (question 14 of the first CAT)? It is a data sufficiency question that tests quadratic equations and fractions. Question: If a > 0, is 2/(a-b) + 2/(a+b) = 1? (1) b = 0 Response: If you plug 0 in, you can the question, does 2/a +2/a =...