Answer:
If √16 is +-4, and we had -4 for one side of a square, and +4 on the other, when we try to get the area again, it will give us a negative area. We can only use both sides as either one, such as (-4x-4) or (4x4), not interchangeably. negative and a negative gives us a positive, which is what our area is +16^2
