Răspunsuri

2014-09-27T16:28:14+03:00
(√5+1)²+4(√5-23/9)-6(√5-1)=
5+1+2√5+4√5-92/9-6√5+6=
2√5+4√5-6√5+12-92/9=(108-92)/9=16/9