How many more unit tiles need to be added to the expression x2+4x+3 in order to form a perfect square trinomial? 1 2 3 4.

Suppose you live in location a, a part of the united states with a semiarid climate . you travel to location b, which is in a neighboring area . there you would find a humid continental climate. in which direction is location b likely to be , relative to location a? what is an explanation for the difference