It is: 2m times 2m is equivalent to 4m^2
4m
74
6m + 7 - 2m + 1 = 4m + 8 If you meant: (6m + 7) - (2m + 1) = 4m + 6
40m^3
40 cubic meters
6m + 5n - 4m + 7n = 2m + 12n
None. By definition a hole is an empty space.
2m + 13n
4m - 8 = 6m =>4m - 6m = 8 => -2m = 8 => m = -(8/2) => m = -4
2m(5k - 4m)(25k2 + 20km + 16m2)
2m(5k - 4m)(25k2 + 20km + 16m2)