LCM of (a - b)^4 and (a - b)^3 is _____?

(a - b)^4

(a - b)^3

(a - b)^2

None of these

The Least Common Multiple (LCM) of two numbers is the smallest number that is a multiple of both.

Since (a - b)^4 and (a - b)^3 are both powers of (a - b), their LCM is the highest power of (a - b) between them:

LCM = (a - b)^4