Bất phương trình
có tập nghiệm là
A.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202025298396545477542/image202025298396545477542747021_images/image202025298396545477542747021_img1.png)
B.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202025298396545477542/image202025298396545477542205128_images/image202025298396545477542205128_img1.png)
C.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202025298396545477542/image202025298396545477542127612_images/image202025298396545477542127612_img1.png)
D.
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202025298396545477542/image202025298396545477542397091_images/image202025298396545477542397091_img1.png)
Đáp án và lời giải
Đáp án:A