Daniiiiiiiii Daniiiiiiiii 11-11-2015 Matematică a fost răspuns Efectuati: a) x(x²+2)-x²(x+3 b) (x-1)(x²+x+1)+2 c) (4x²+2x+1)(2x-1)-8x³+2 d) (a²-1)(a+2)-(a³+a)(-2)