Question

Aratati ca 3v3(v3-4v2)-2v2(v2-6v3) reprezinta un nr natural

Answer 1

3√3(√3-4√2)-2√2(√2-6√3)=
=3√9-12√6-2√4+12√6=  observ ca -12√6+12√6=0 (se reduc)
=3·3-2·2=
=9-4=
=5 (nr. natural)

Answer 2

3√3*(√3-4√2)-2√2*(√2-6√3)=9-12√6-4+12√6=5