Factor the expression completely

45x-18y+36

To factor the expression completely, we can first look for the greatest common factor (GCF) of the given terms.

The GCF of 45x, -18y, and 36 is 9 (since 9 is a common factor of 45, 18, and 36, and it is also a common factor of x and y).

Factoring out the GCF, we get:
45x - 18y + 36 = 9(5x - 2y + 4)

Thus, the expression 45x - 18y + 36 can be factored completely as 9(5x - 2y + 4).