1. Közösség
2. Study Group

This particular problem led me into believing I was making the right decision, when in fact I had fallen into a trap placed by the creator! Maybe I should start checking my work...

1. Közösség
2. Study Group

Hello, I'll make this brief as it's just a small question and didn't know where else to ask this.   ​   If we are using (P+Q)^2  = P^2 + 2(P)(Q) + Q^2 ; why does the x^2 become (x)^2 and not (x^2...