how do I expand this:?

Question

(n x a - n) (n x a - n)

Answer 1

answer:

n^2 a^2- 2n^2(a) + n^2

note: ^ means to raise it to a power, so its

A squared times N squared minus two times N squared times A plus N squared.

Answer 2

that's easy the ans is n2a2 - 2n2a +n2, i.e n squared a squared minus two n squared a plus n squared. provided the question posted is correct which i doubt! i think u r missing out a coupla brackets. cheers

Answer 3

You multiply the content of one bracet by the content of the other bracket:

(n x a - n) (n x a - n) =
nxa(nxa - n) - n (nxa - n)
(nxa)(nxa) - (nxa)(n) - (n)(nxa) -(n)(-n) =
(nxa)^2 - 2(n)(nxa) + n^2