Question

wouldn't it be (p^2 + 4)(p^2 - 4)?? but it's not a choice?? and i'm really confused

Answer 1

p^2-4 can be further broken down into (p+2)(p-2)

Answer 2

so it's d?

Answer 3

Yup.

Answer 4

but couldn't (p^2 + 4) be broken down too

Answer 5

\[p ^{4}-16 = (p ^{2})^{2}-((2)^{2})^{2}=(p ^{2}+2^{2})*(p ^{2}-2^{2})=(p ^{2}+2^{2})*(p+2)*(p-2)\]

Answer 6

Only x^2-y^2 is broken into (x-y)(x+y), not (x^2 + y^2).

Answer 7

oh..

Answer 8

thanks :]

Answer 9

You're welcome. :)