1. The problem statement, all variables and given/known data Let A be the set of all integers x such that x is = k2 for some integer k Let B be the set of all integers x such that the square root of x, SQRT(x), is an integer Give a formal proof that A = B. Remember you must prove two things: (1) if x is in A, then x is in B, AND (2) if x is in B, then x is in A 2. Relevant equations 3. Why I am so useless I am taking an online discrete math class as a prerequisite for my major. The prof is a nice enough person, but the extent of help that he provides on questions that I have asked is "read the book". Which I have...and it didn't help me in this case. If someone could point me in the right direction of how to get this proof underway, I would appreciate it.