Question

(8m^3+4m^2)

Answer 1

factor and check

Answer 2

4m^2(2m+1)
m=0 or m=-0.5

4(0)^2(2(0)+1)=0

4(.5)^2(2(-.5)+1)
4(1/4)(-1+1)
1(0)=0

Answer 3

thanks but I still don't get it.