Answer:

For a trinomial to be a perfect square trinomial, it should satisfy the following criteria:

a. The first and last term are perfect squares

b. Twice the product of the square root of the first and the square root of the last term is equal to the middle term.

Step by step explanation:

1. Get the square root of the first term
2. Get the square root of the last term
3. Express the result as the square of a binomial