Recent content by caligari

Mathopolis Question Database I was wondering why this function was this answer and not X^2+2x+4 and why it is in the form that it is. Is it just some rule that you put it in that form? In the answer given, (x + 4)2 + 2(x + 4) , I don't understand how you get 3 different (x+4). Even though the...

The problem is (x+y)^2+2(X+Y)+1 and the answer is supposed to be (X+1+Y)^2 I looked it up on this calculator but the second step makes no sense. First I do not know how the +2 disappears and where the extra (X+Y) come from. Also it's explanation when you click on the black box doesn't make...