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(1)sa GIA.O DVC vA DAo T~O TUYEN SINH LoP 10 THPT NA.M H<}C 201~ - 2013 MONTOAN ThCli gian lilm bili: 120 phut KY THI HATINH DE CHiNH THUC (D€ thico 01 trang) lMa d~Oll Can (2 di8m) a) True din thirc m~u cua bieu thirc: ./6-1' b) G·•· iai h"~ ph uong trtlnh : {2X - Y = x+2y=1 Can (2 di8m) 4a -Fa -Fa.- P = (-Fa -Fa.) voi a> va a :;t a-I aa a a) Rut gon bieutlnrc P b) VO L gia tri nao cua a thi P = Can (2 dL8m) a) Trong m~t phang toa dQ Oxy, duong th~ng y = ax + b di qua di8m M (-1; 2) va song song voi duong thing y = 2x + Tim a va b b) GQi x, va x21a hai nghiem cua phirong trinh: X2 + 4x - m2 - 5m = O Tim cac gia tr] cua m cho [x, - x21 = • A' Cho bieu thuc: Can (3 di8m) Cho tam giac ABC co ba goc nhon, nQi ti~p duong trim tam O Hai duong cao AD, BE c~t tai H (DEBC, E E AC) a) Chung minh ill giac ABDE nQi ti~p duong tron b) Tia AO c~t dirong tron (0) tai K (K khac A) Chirng minh ill giac BHCK la hinh binh hanh, c) GQi F la giao di8m cua tia CH voi AB Tim gia tri nho nhat cua bieu tlnrc : AD BE CF Q=-+-+- HD HE HF Can (1 di8m) Tim tAt ca cac gia tri cua tham s6 m d8 phirong trinh sau vo nghiem: x2-4x-2mlx-21-m+6 = O H~t - - Thi sinh khong duoc su dung tai lieu - Giam thi khong giai thich gi them H(J va ten thl sinh: ;tf1o/tti W.I!.IJ.M bdo danh: 1.l.!! J£'«, (2)