Răspunsuri

2014-05-10T11:37:26+03:00
1/a-1/b=1/(√3-1)  -1/(√3+1)
aducand la acelasi numitor
(√3+1-√3+1)/(√3-1)(√3+1)=2/(3-1)=2/2=1
1 5 1
2014-05-10T12:40:55+03:00
1/a-1/b=1/(√3-1)  -1/(√3+1) (√3+1-√3+1)/(√3-1)(√3+1)=2/(3-1)=2/2=1.