UBND TINH CA MAU SO' GIAO DVC VA DAO TAG KY THI CHON HSG VONG TINH LOT THCS NAM HOC 2012 - 2013 Mon thi: Toan Ngaythi: 14/4/2013 Thai gian: 150 phut (khong ke thai gian giao de) Bail: (4 diem) Tinh gia tri bieu thurc: \ \ T=T -7- 7= p=r ~r ~ V2 V2+V3 V3+V4 '" V2012+V2013 V6 + V2 Bai2: (2 diem) _., , i Chung minh rang: ~ , b+ c