Question

how do u do this?

Answer 1

\[4^2 - 2^2 = 16-4 = 12\]
p -n = 4-2 = 2

Answer 2

the general formula is:

If p-n = x
then
\[p^2 - n^2 = (p+n)x\]

Answer 3

thank you!
you might of save my sat score

Answer 4

haha yw

with sat questions, try not to over think it :)

Answer 5

thanks for the advice :D