Answer:
3xy
Explanation:
coefficient: 12 6 - 9 The common factor is 3. Each can be evenly divided by 3
x: x^3 x^2 x
x: The common factor is x
y: y y^2 y^3
y: The common factor is y
The GCF is 3*x * y
If you want what is left over in the brackets, you will get
3xy(4x^2 + 2xy - 3y^2)