Question

Determine which polynomial is a perfect square trinomial.

25x2 − 40x − 16

9a2 − 20a − 25

25b2 − 15b + 9

16x2 − 56x + 49

Answer 1

Hello, a perfect square trinomial will have the form once factored: \[(x - y)(x + y)\]

Answer 2

something llike D?

Answer 3

The first and last term MUST be perfect squres.

The middle term MUST be the product of both the first and last term MULTIPLIED.

Answer 4

\[16x^2 − 56x + 49 \]
\[(4 x-7)(4x-7)\]
\[(4 x-7)^2\]

So D can not be it.

Answer 5

ok

Answer 6

C?

Answer 7

Factor it out yourself. You can do it!