Simplify:(6m-2)(3m-3)+(2m+1)(3m-4)?

To simplify, first distribute the terms in each set of parentheses:

(6m-2)(3m-3) = 18m^2 - 18m - 6m + 6
= 18m^2 - 24m + 6

(2m+1)(3m-4) = 6m^2 - 8m + 3m - 4
= 6m^2 - 5m - 4

Now, add the two simplified expressions together:

(18m^2 - 24m + 6) + (6m^2 - 5m - 4)
= 18m^2 + 6m^2 - 24m - 5m + 6 - 4
= 24m^2 - 29m + 2

Therefore, the simplified expression is 24m^2 - 29m + 2.