Which will result in a perfect square trinomial?

(3x-5)(3x-5)

Step-by-step explanation:

A perfect square trinomial is a polynomial that can be expressed in the form of the square of binomial.

Or that is a square root of a binomial.

where 3x - 5 is a bionomial,

⇒  (3x-5)(3x-5) is a perfect square trinomial,

But, is not a perfect square root of a binomial,

⇒ (3x-5)(5-3x) is not a perfect square trinomial,

But, is not a perfect square root of a binomial,

⇒ (3x-5)(3x+5) is not a perfect square trinomial,

But,  is not a perfect square root of a binomial,

⇒ (3x-5)(-3x-5) is not a perfect square trinomial,

b

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.