When you are dividing 2m^2-m+3 by (2-m) and there is a remainder of 9, it means that the 9 is in excess. So deduct 9 from the dividend to make it 2m^2-m-6. Then the divisor (2-m) will give you the quotient of -2m-3.
Check: (2-m)(-2m-3) = 2m^2-m-6.
2m^2-m+3 - [2m^2-m-6] = 9. Correct.
The quotient is -(2m+3).