Răspunsuri

2014-10-14T21:41:25+03:00
5xa+3xb+2xc=3xa+3xb+2xa+2xc=3(a+b)+2(a+c)=3x33+2x11=99+22=121
2014-10-14T21:50:23+03:00
Descompui pe 5a in 3a+2a si tot asa apo scoti factor comun
deci 3a+2a+3b+2c=3(a+b)+2(a+c)= 3x33+2x11= si aici calculezi Bafta