Question

If A = {positive integers} and B = {...,−4, −3, −2, −1} what is A ∩ B?

Answer 1

A intersect B
there will be no intersection

Answer 2

since positive integers are not part of the negative integers

Answer 3

If you expand the entire equation, u should get the answer

A^(6/2) * B^(6/3) = 432

A^3 * B^2 = 432

432 factors down to 16 * 27

16 = 4^2 and 27 = 3^3

So, A=3 and B=4

A*B = 3*4

AB = 12