OanaMaria2401 OanaMaria2401 21-12-2016 Matematică a fost răspuns Efectuati:b)(5a^2+3ab)+(b^2-2ab)-(a^2+3b^2-4ab)+(a^2-b^2)=c)(6m+3n)-(2n+3m+5)-(3m-4n-6)=d)(13m^2+2mn-n^2)-(2m^2+3mn+4n^2)-(10m^2+2mn)=DAU COROANA!!