Question

Reducir : M = (x+1)^3+(x-1)^3-(2x^3-x)

Answer 1

M= (x + 1)³ + (x – 1)³– 2x³

M= (x³-3x².1+3.1²-3³)+ (x²+3x³.1+3x³.1³)-2x³ x³-3x²+3x-1+x³+3x²+3x+1-2x³                                     M=      0+6x