Giải bất phương trình:
.
A.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202040177823989251210/image202040177823989251210142702_images/image202040177823989251210142702_img1.png)
B.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202040177823989251210/image202040177823989251210489697_images/image202040177823989251210489697_img1.png)
C.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202040177823989251210/image202040177823989251210266741_images/image202040177823989251210266741_img1.png)
D.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202040177823989251210/image202040177823989251210362723_images/image202040177823989251210362723_img1.png)
Đáp án và lời giải
Đáp án:B
Lời giải:Lời giải
Chọn B
.
Chọn B
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202040177823989251210/image202040177823989251210709718_images/image202040177823989251210709718_img1.png)
Vậy đáp án đúng là B.