Question

find the 3rd term of the expansion (5m-3d)^4

Answer 1

1350d^2m^2

Answer 2

use pascals triangle to figure it out. in ur case because the exponent is to the fourth. you would have a situation where you would do \[(1)(5m)^{4} + (4)(5m)^{3}(-3d)^{1} + (6)(5m)^{2}(-3d)^{2} + (4)(5m)^{1}(-3d)^{3} + (1)(-3d)^{4}\]

Answer 3

and clearly you would get the same answer as the other guy