Question

What is the least common multiple, LCM, of the two polynomials?
(x + 3) and (x^2 - 9)

Answer 1

The LCM of (x + 3) and (x^2 - 9) is the (x^2 - 9)
You get this by realizing thay (x^2 - 9) factors to (x + 3)(x - 3)
and the (x + 3) is not needed twice for LCM. So the (x^2 - 9) contains all the factors needed for an LCM.