Solution
Perfect square trinomials are algebraic expressions with three terms that are obtained by multiplying a binomial with the same binomial.
To determine if the trinomials in the question is a perfect trinomial, we will factor each of the trinomials and then decide which is a perfect trinomial
The first trinomial above is a perfect trinomial
The second trinomial above is a perfect trinomial
The third trinomial above is not a perfect trinomial
The fourth trinomial above is a perfect trinomial
The summary of the solution is given below