Question

Answer 1

B

Answer 2

B

Answer 3

b

Answer 4

b

Answer 5

B. \(\dfrac{-19}{51}\)

Answer 6

câu b

 

 

Answer 7

B

Answer 8

B

Answer 9

B

Answer 10

B

Answer 11

B

Answer 12

\(B.\dfrac{-19}{51}\)