Question

efectuar

(x+y)(x²-xy+y²)

Answer 1

(x+y)(x²-xy+y²)     multiplicando
=x³-x²y+xy²+x²y-xy²+y³     simplificando
=x³+y³

Answer 2

x∧3 - x∧2y+xy∧2+x∧2y- xy∧2+y∧3
se elimina terminos semejantes y te queda 
x∧3+y∧3 
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