Question

Which is equivalent to (9y^2 – 4x)(9y^2 + 4x), and what type of special product is it?

a) 81y4 – 16x2, a perfect square trinomial
b) 81y4 – 16x2, the difference of squares
c) 81y^4 – 72xy^2 – 16x^2, a perfect square trinomial

Answer 1

i am thinking B

Answer 2

You are right :)

Answer 3

yay :3