2x^3-9x^2+12x=2m. giai va bien luan.......................................................................................................................
thay tap xac dinh la R ban chi can ap dung dao ham la dc sau khi dao ham, ban dua vao do thi se bien luan dc voi m ntn thi dc so ng k nhau. co phai minh gjai ro luon ko
co cach nao giai bang kien thuc lop 10 ko..............................................................................................................
co cach nao giai bang kien thuc lop 10 ko................................................ .................................................. ............