Question

Which of the following algebraic expressions represents the square of a difference?

Answer 1

What's the following?!??! o_O

Answer 2

(n - 2) (n - 2)2
(n + 2)(n - 2) (n - 2)(n + 2)

Answer 3

(n-2) - A difference
(n-2)^2 -- A difference, squared -- A square of a difference
(n+2)(n-2) = n^2 - 4 -- A difference of squares
(n-2)(n+2) = n^2 - 4 -- A difference of squares