[8.06] which polynomial is a perfect square trinomial?

49x2 − 28x + 16

4a2 − 20a + 25

25b2 − 20b − 16

16x2 − 24x − 9

Step-by-step explanation:

A binomial is called perfect square trinomial

if is satisfied.

For

a = 49, b = -28 and c = 16,

Thus, is not a perfect square trinomial.

For

a = 4, b = -20 and c = 25,

Thus, is a perfect square trinomial.

For

a = 25, b = -20 and c = -16,

Thus, is not a perfect square trinomial.

For

a = 16, b = -24 and c = -9,

Thus,   is not a perfect square trinomial.

answer: what in the world is this

step-by-step explanation:

the answer is 21%.