Răspunsuri

2014-02-28T16:16:53+02:00
.a=(3r2 -2r5)+2*(1-2r5)
a=3r2-2r5+2-4r5
a=3r2+2-6r5 
(3r2-2r5)+2(1-2r5)
3r2-2r5+2-2r5
scuze venea 3r2-2r5+2-4r5
ca inmulteam dupaia
3r2+2-6r5