CÂU 16. CHỌN A. (I) Y    (X 1)3 3(X1)2   0, X X X...

1.

1

.

1

1

x

x

x

y

x

 

(III)

2

2

2

2

2

2

1

1

x

x

  

2

1

1

2

1

0,

x