... 3018 4024 12072 (Hc sinh lm cỏch khỏc ỳng cho im ti a) HT - 0, 25 1,0 0, 25 0, 25 0, 25 0, 25 1,0 0, 25 0, 25 0, 25 0, 25 ... (1,0) 0, 25 ộ - b = 8(1 a ) a - b- = ờ - b = 2(2) a 0, 25 0, 25 1,0 0, 25 0, 25 Thy giỏo:Lờ Nguyờn Thch T:01694838727 ổ + b - 5 a ữ ữ ỗ Trng tõm G ỗ ữ ỗ ; ứ (d) 3a b = ữ ố (3) 0, 25 S = p + 65 + 89 ... Bt phng trỡnh ó cho tng ng vi x + x x 1,0 0, 25 0, 25 0, 25 0, 25 1,0 0, 25 (2 x)( x 1) x 4(2 + x x ) x x + 0, 25 x 5x 14x + x 0, 25 III (1,0) IV Kt hp vi iu kin, nghim ca bt phng...