(easy)+ brainliest

fully factor this equation pls: :

2x^3 + 10x2 − 4x2y − 20xy

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.