https://www.youtube.com/watch?v=rCKalZUpYpE

TRA GOOGLE ĐI NHA BẠN ! CHÚC BẠN HOK TỐT

đầu tiên em đo khuôn mặt của mình rồi sau đó vẽ con thú mà mình yêu tk rồi em muốn làm đeo hay cầm cũng được em nhé

Đề bài yêu cầu gì?

48. My brother whose house was broken in called the police.

49. Mary was too very tired to study more.

50.If Emily wasn't sick today, she could go to school.

51.Although my grandparents are very busy, they spend a lot of time taking care of us.

52. The floor hasn't been cleaned yet.

53.We haven't seen our grandfather for five month.

54. I wish I could remember the answers to these questions.

55. I spent three hours cleaning the house yesterday. 

P8. 48.My brother whose house was broken in called the police.

49. Mary was too tired to study.

50. If Emily wasn't sick today, she could go to school.

51. Although my grandparents are very busy, they spend a lot of time taking care of us.

P9. 52. The floor hasn't been cleaned yet.

53.We haven't seen our grandfaather for five months.

54. I wish I could remember the answer to these questions.

55. I spent three hours cleaning the house yesterday.

BTKL: \(a=\Sigma m_{O_2}=m_{hh\text{ oxit}}-m_{hh\text { KL}}=14,2-7,8=6,4(g)\)

\(ĐK:\left\{{}\begin{matrix}2-x\ge0\\x-2\ge0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x\le2\\x\ge2\end{matrix}\right.\Leftrightarrow x=2\)

Thay \(x=2\Leftrightarrow2=8\left(\text{vô lí}\right)\)

Vậy PT vô nghiệm