What makes special products special?

Answer 1

In math, like algebra and calculus, a product is special when it is very common and worth knowing.

Some examples area:

(x + y) = ax + ay (Distibutive Law)

(x + y)(x − y) = x2 − y2 (Difference of 2 squares)

(x + y)2 = x2 + 2xy + y2 (Square of a sum)

(x − y)2 = x2 − 2xy + y2 (Square of a difference)

Answer 2

These have a certain pattern that is important and is repeated many times in math problems.

Answer 3

The pattern in which it appears makes it special.

Answer 4

Every product is special if you get it right.

Answer 5

These have a certain pattern that is important and is repeated many times in math problems.