Question

calculati suma inverselor urmatoarelor numere -1,2-√3,2+√3

Answer 1

$-1+ \frac{1}{2- \sqrt{3} }+ \frac{1}{2+ \sqrt{3} } =-1+ \frac{2+ \sqrt{3} }{4-3} + \frac{2- \sqrt{3} }{4-3} =-1+2+ \sqrt{3} +2- \sqrt{3}= 3$

Answer 2

1/(-1) +1/(2-√3)+1/(2+√3)=-1+(2+√3)/(4-3)+(2-√3)/(4-3)=

-1+2+√3+2-√3=-1+4=3