DE NAY KHONG DUNG VOI DE THI CHUYEN CAP CHO LAM.[r]
(1)De thi 1c mon toan cua nghe an khong chinh xac………… Vi B nguyen thi chua chac mau thuoc uoc cua tu
Doi mau la so huu ti, thi co the B cung la so nguyen vi tu = const
Cau 4d thj de cho diem qua it.vi cau phai 1d mat khac de ko hay,khong kho lam