Question

Determine which polynomial is a perfect square trinomial. (3 points)
36x^2 − 18x − 9
4a^2 − 28a − 49
25b^2 − 20b + 4
4x^2 − 6x + 9

Answer 1

take the square root of the first number and the square root of the last number and multiply them together. and if the middle number is twice that product, then it's a perfect square trinomial

Answer 2

4x2 − 6x + 9?

Answer 3

2x(3) = 6x
6x(2) = 12x

so no

Answer 4

it's gotta be twice the product

Answer 5

so b

Answer 6

i think it would be c

Answer 7

oh okay thnx