Răspunsuri

2014-03-15T17:27:41+02:00
M'am chinuit putin,da' mi'a reusit.
a=(√3+√5)x(3-√15)+(1-√3)+4√3
=3
√3-√45+3√5-√75+1-√3+4√3
introducem in fractie,scadem -
√3 sin 4√3,adunam 3√3 cu 3√3 si vine a=√75-√45+√45-√45+1.Se simplidica si ramane 1. a=1. Numar natural.