Antocisebastian159 Antocisebastian159 07-12-2021 Matematică a fost răspuns 17. Efectuati: a) (a-1)(3-a)-a(a+2); b) (x²+x)(x-1)-2(x+x); c) (a²-a +1)(a-1)-(a+1)(a +a+1); d) (p+2)(p'-2 p’+2p+1)-(p\+2 p +2 p-1)(2-p)+p"; e) 2(1 - x)(1-x+ x - x'+x")-3(1+x+rº+x'+x)(1+x); f) (1+1)(2+1)(3+t)-(1-1)(2-1)(3-1)-(1-4°)(2-1). -