Question

Dados A= (a+x) (a²-ax+x²) e B= (a-x) (a²+ax+x²) determine A-B.

Answer 1

A=(a+x)(a^2-ax+x^2)=ax+a^3-a^2x+x^3
B=(a-x)(a^2+ax+x^2)=a^3+2a^2x+2ax^2+x^3
A-B=(a^3-a^3)+(-a^2x-2a^2x)