Hi,

how do you go from  (x+1)^3-1 to x(x^2+3x+3)

by expanding the (x + 1)^3

(x+1)^3-1  

(x+1)(x+1)(x+1)-1

(x^2 + 2x + 1)(x+1)-1

x^3 + 2x^2 + x + x^2 + 2x + 1 - 1

x^3 + 3x^2 + 3x

x(x^2 + 3x + 3) 

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