Question

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

Y^2 - 225
is a difference of squares: (y - 15)^2
is not a difference of squares
is a difference of squares: (y-15)(y + 15)
is a difference of squares: (y + 15)^2

Answer 1

C

Explanation:

y² - 25

= y² - 5²

= (y + 5)(y - 5) which is a difference of two squares