The area of a square is represented by x^2-4x+4. What is the perimeter? Justify your reasoning.

Answer 1

Area = S*S where S is the measure of the side of the square.

Area = x^2 -4x +4 = (x-2)(x-2), so S=x-2

the perimeter is 4S = 4(x-2) = 4x-8