## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

The given expression, $-25x^2-9 ,$ is not a perfect square trinomial because it has only 2 terms. It is not a difference of squares because the signs of the first and second terms are the same. It is not a prime polynomial because it can be factored by factoring the $-1$. Hence, among the choices, it is $\text{ none of these .}$