Determine whether the polynomial is a difference of squares and if it is, factor it.

y2 - 16

(y - 4) (y + 4)

Step-by-step explanation:

y² - 16 ← is a difference of squares

Since y² and 16 are both squares separated by a difference, that is minus

A difference of squares factors as

y² - 16

= y² - 4²

= (y - 4) (y + 4)