p, L, p=L+L+L+L, you can add to make sure eg. perimeter= 8 that means that the side lengths could be all 2's or 4, 2, 1, 1, but either way it will create the perimeter.
2) the formula for the perimeter of a square is P=4L or P=4x because to find the perimeter you have to add up all the sides, and for a square, all the sides are equal, so it is P=4L or P=4x.
be the length of the square, then the area is 
. Hence, the side is the positive root of the area, which is 