HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
rains - is raining
23D
24A
25D
26B
27B -> had known
28A -> I had known
29D -> wouldn't have turned
30A -> would
31C -> had
32A -> I were
33A -> had had
34C -> will
16B
17C
18C
19B
20C
21D
22A
1B
2D
3C
4D
5A
6B
7C
8A
9D
10C
a, \(x\left(x-3\right)-x^2=2\)
\(\Leftrightarrow x^2-3x-x^2=2\)
\(\Leftrightarrow3x=2\)
\(\Leftrightarrow x=\dfrac{2}{3}\)
b, \(x^3-16x=0\)
\(\Leftrightarrow x\left(x^2-16\right)=0\)
\(\Leftrightarrow x\left(x-4\right)\left(x+4\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x-4=0\\x+4=0\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=0\\x=4\\x=-4\end{matrix}\right.\)
1. Kelly is never late for school.
2. We often eat out on Sundays.
3. I always set the table for breakfast.
4. Kim usually wakes up at 7:00 a.m.
0. instructions
1. division
2. Buddhist
3. correspondence
4. dependent
5. friendly
6. impression
7. Hindu
8. officially
9. religious
10. interested
21. education
22. peaceful
23. silently
24. correspondent
25. famous
26. impressive
27. friendliness
28. instructions
29. collecting
30. compulsory
65C
66D
67A
68C
69A
1. comfort -> comfortable
2. is -> are
3. is -> are
4. fastly -> fast
5. helps -> help