Determine which polynomial is a perfect square trinomial. (5 points)
49x2 − 28x + 16
9a2 − 30a + 25
25b2 − 45b − 81
16x2 − 24x − 9
i know how to slove but isn't b and d perfect square trinomials ? ?

Option 2 -

Step-by-step explanation:

To find : Determine which polynomial is a perfect square trinomial?

Solution :

The perfect square trinomials are of the form :

Now, We check one by one which form make this satisfied.

1)

We can re-write as

In this A=7x and B=4

Putting in formula,

So, The above equation will not form a trinomial.

2)

We can re-write as

In this A=3a and B=5

Putting in formula,

So, The above equation will satisfy the form it is a trinomial.

3)

We can re-write it trinomial form due to negative sign.

So, The above equation will not form a trinomial.

4)

We can re-write it trinomial form due to negative sign.

So, The above equation will not form a trinomial.

Therefore, Option 2 is the only which make a perfect square trinomial.

x = 23.78

step-by-step explanation: