(m+n)³= tolong dengan jalannya yaa

(m+n)^3
=1×m^3×n^0 + 3×m^2×n^1 + 3×m^1×n^2 + 1×m^0×n^3
=m^3 + 3m^2 n^1 + 3m^1 n^2 + n^3