Răspunsuri

2014-06-02T22:32:48+03:00
Rad5/2 +2rad5 = rad5/2+4rad5/2=5rad5/2
rad5/2*2rad5=5 (rad5*rad5=5... 2/2=1)
2014-06-02T22:35:33+03:00
Rad 5/2*2rad5=rad5*rad5=rad25=5