What’s the gcf between 63u^4 9u^3 and 18u

The greatest common factor (GCF) between 63u^4, 9u^3, and 18u is 9u.

You can find the GCF by factoring each term and identifying the common factors. In this case, you can factor out 9u from each term:

63u^4 = 9u^3 * 7u
9u^3 = 9u^3
18u = 9u * 2

The GCF is the factor that is common to all terms, which in this case is 9u.