2 351 A = x²+x a, bị C, B6, A = x²+2x+1 x+1 - 12-22 + x 1-2 x²-x) ベースペース Jin's gtA khi, 1x+21=1 2+% 2-7 - 4x2 2-xx=37 +- x²-4 2+x/2x²-x³ a, b, c, Tin, x de² A =3 x+1 ht. A = (x -x-1). 2x x-1 7C+1 a b c Juy x de² A =-4 57-5 38. B8 A= 2-4 +2 + (x(x-2) x-2 х + x 2-7) a, a c₁ Tust the A < ...