The GCF is 6a.
2 x 3 x 3 x a = 18a
They are 1, 2, 3, 4, 6, 9, 12, 18, 36,1a, 2a, 3a, 4a, 6a, 9a, 12a, 18a, 36a,1b, 2b, 3b, 4b, 6b, 9b, 12b, 18b, 36b,1a2, 2a2, 3a2, 4a2, 6a2, 9a2, 12a2, 18a2, 36a2,1ab, 2ab, 3ab, 4ab, 6ab, 9ab, 12ab, 18ab, 36ab,1b2, 2b2, 3b2, 4b2, 6b2, 9b2, 12b2, 18b2, 36b2.
2 x 3 x 3 x a = 18a
Yes.
b 18a 1.8 doc
3(6a + 5) + 30 18a + 15 + 30 18a + 45
32
18a^3bc
6a
That depends on the value of a.
18a
-16A
The sum of 18 + 30 is 48.
18a^3bc