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


y2 – 25x + 25



is not a difference of squares

is a difference of squares: (y – 5)2

is a difference of squares: (y – 5)(y + 5)

is a difference of squares: (y + 5)2

Verified Answer :

Just by the language difference means subtract, 

Y^2-25 is the difference of squares
factored it's the sum and difference of their square roots

(x+5) (x-5)