Tính
.
A.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20204005515834152625/obj20204005515834152625942666_images/obj20204005515834152625942666_img1.png)
B.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20204005515834152625/obj20204005515834152625227345_images/obj20204005515834152625227345_img1.png)
C.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20204005515834152625/obj20204005515834152625299060_images/obj20204005515834152625299060_img1.png)
D.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20204005515834152625/obj20204005515834152625993119_images/obj20204005515834152625993119_img1.png)
Đáp án và lời giải
Đáp án:D
Lời giải:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20204005515834152625/obj20204005515834152625717909_images/obj20204005515834152625717909_img1.png)