(n+1)^3 = n^3 + 3n^2 + 3n + 1
(4b+5)^3 = (4b)^3 + 3(4b)^2*5 + 3(4b)*5^2 + 5^3 =
= 64b^3 + 240b^2 + 300b + 125
(6x+2)^3 = (6x)^3 + 3(6x)^2*2 + 3(6x)*2^2 + 2^3 =
= 216x^3 + 216x^2 + 72x + 8
(g+4)^3 = g^3 + 3g^2*4 + 3g*4^2 + 4^3 = g^3 + 12g^2 + 48g + 64