Question

Instructions: Determine if the polynomial represents a Difference of Squares or Perfect Square Trinomial.

Answer 1

Notice that

`25x^2-1=5^2x^2-1=(5x+1)(5x-1)`

Therefore, 25x^2-1 is a difference of squares.

Furthermore, it cannot be a perfect squares trinomial because it consists of only 2 terms, not 3.