(4x+0.1)^3 = 64x^3 + 12.8x^2 + 0.768x + 0.001

(4x+0.1)^3 = 64x^3 + 24x^2 + 2.1x + 0.008

(4x+0.1)^3 = 64x^3 + 12.8x^2 + 1.44x + 0.064

(4x+0.1)^3 = 64x^3 + 19.2x^2 + 1.92x + 0.064