Nghiệm của phương trình
là:
A.![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668242341_images/obj20192504842211797668242341_img1.png)
.
![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668242341_images/obj20192504842211797668242341_img1.png)
![img2](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668242341_images/obj20192504842211797668242341_img2.png)
B.![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668815227_images/obj20192504842211797668815227_img1.png)
.
![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668815227_images/obj20192504842211797668815227_img1.png)
![img2](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668815227_images/obj20192504842211797668815227_img2.png)
C.![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668180287_images/obj20192504842211797668180287_img1.png)
.
![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668180287_images/obj20192504842211797668180287_img1.png)
![img2](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668180287_images/obj20192504842211797668180287_img2.png)
D.![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668579675_images/obj20192504842211797668579675_img1.png)
.
![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668579675_images/obj20192504842211797668579675_img1.png)
![img2](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668579675_images/obj20192504842211797668579675_img2.png)
Đáp án và lời giải
Đáp án:A
Lời giải:Chọn A
.
Vậy đáp án đúng là A.
![img1](https://cungthi.online/upload/questionbank3/eduquestion/20192504842211797668/obj20192504842211797668217149_images/obj20192504842211797668217149_img1.png)