Răspunsuri

2014-11-04T15:45:15+02:00
A)(rd3+rd2)/(rd3+rd2)(rd3-rd2)=rd3-rd2/3-rd6+rd6-2=rd3-rd2/3-2=rd3+rd2
b) 2(rd3-rd2)/(rd3-rd2)(rd3+rd2)=2rd3-4/3-rd6+rd6-2=2rd3-4/3-2=2rd3-4