Ok so I know that when you have radicals such as the following you only have one answer right?... x + 1 - 2(square root of [x+4]) = 0 ok so x = 5 right?.... i dunno why but it just does... I cant solve it If i solve it It works looks like this: (squaring everything I get this in the end) x^2-2x-15=0 ok so the answers for x = 5 ORRRRRRRRRRRR x = -3???? why is this so... I must be doing this wrong.. but I dunno how its done=/ plz help. if I graph them... the first one just is a l ine that just "ends" =/ and the other one is a parabula of course.