1280, -2560, 5120
Multiply the preceding term by -2 and
Differnce of 2 pefect squares
a^2-b^2=(a-b)(a+b)
(p^2)^2-9^2=(p^2-9)(p^2+9)
p^2-9=(p-3)(p+3)
factored is
(p-3)(p+3)(p^2+9)
It is C, "What type of paper are most greeting cards made with."
I am not sure but I think the answer is B.
