Question

The area of a square is defined by, A(x) = x 2 - 8x + 16. What is the length of a side of the square?

Answer 1

You must factor the second-degree polynomial to find the sides of the square. The correct factorization for this case is
 x ^ 2 - 8x + 16 = (x-4) (x-4).
 Therefore, the length of the side of the square is
 L = (x-4).