Răspunsuri

2014-04-07T19:55:43+03:00
E1=X²+2X+1+X²-4X+2²-X²-3²
se reduc al 2 lea x² cu ultimul x²
E1=x²-2x+1+4-9
E1=x²-2x-4
1 5 1
2014-04-07T20:00:25+03:00