Which expression can be used i find the difference of the polynomials (10m--4)?

Hi! in this problem we have two polynomials; (10m -6) and (7m -4).

if we want to find the difference between these polynomials, we can do a direct subtraction.

so:

(10m - 6) - (7m - 4)

10m - 6 - 7m + 4

(10m - 6m) + (4 - 6)

3m -2

So the difference between the two polynomials is d = 3m - 2.

4x and 6y

im not sure though

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6