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Ionutadelinvisi
a fost răspuns

-Calculati:
A) (1/√17-2√17)×√17-5√63:(-7).
B) -(6/√3-2√3)×5/√3+√81.
-Vreau rezolvarea completa !

Răspuns :

a)=(√17/17-2√17/17)x√17+5√63/7
=(-√17/17)x√17+15√7/7
=-17/17+15√7/7
=-1+15√7/7
=(-7+15√7)/7

b)=-(6√3/3-2√3)x5√3/3+9
=-[(6√3-6√3)/3]x5√3/3+9
=0x5√3/3+9=9

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