3.(x-2)+2x=10
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a)x2 +x =0
x(x+1)=0
* x=0
* x+1=0
x=0-1
x=-1
Vậy x=0 hoặc x=-1
2.(x-1) +3(x-2) =x-4
2x-2+3x-6=x-4
x+3x-x=-4+2+6
3x=4
x=\(\frac{4}{3}\)
a,
x2 +x =0
\(\orbr{\begin{cases}x^2=0\\x=0\end{cases}}\)
Vậy x= 0
b,2.(x-1) +3(x-2) =x-4
2x - 2 + 3x - 6 = x - 4
2x + 3x - x = -4 +6 + 2
4x = 0
Vậy x = 0
1.Sports and games play an important part in our life. ( play: đóng vai trò)
2.We often play tennis and do aerobics in summer.
3.Sometimes I go swimming with my friends at weekend.
4. I don't playing basketball because I am very short.
5.Lucy often plays video games in the afternoon.
1. Look! The teacher ____is coming_______. She ____has______ long black hair.
2. My father _____drives______ me to school everyday,
3. Children shouldn't ____buy_______ firework at Tet Holiday.
4. Students must ______go______ to school on time.
5. Where ____is John______ ? He _____is reading______ books in the library. He ___goes______ to the library twice a week.
Học tốt nhé ! ( ^ ^ )
IX. Rewrite the sentences:
1. There are a lot of interesting programs on VTV 3
→ VTV3 has a lot of intertesting programs
2. My class has 34 students.
→ There are 34 students in my class
3. My favorite cartoon on TV is 'Tom and Jerry'
→ I Tom and Jerry
4. I enjoy watching TV. (interested)
→ I am interested in watching TV
5. Duong is better than anyone in the class.
→ Duong is the best student in the class
6. Minh is taller than Huong. (as)
→ Huong is not as tall as Minh
Học tốt nhé ^^
1. There are 40 students in my classroom._How many students are ther in your classroom?
2. My brother is studying in his bedroom._what is your brother doing in his bedroom?
3. My family usually goes to Da Lat on summer vacation._where does your family usually go to on summer vacation?
4. Her children often go to the club by bike._How do your children often go to the club?
5. My favorite singer is David Archuleta._What is your favourite singer?
6. The show lasts two hours and a half_What time does the show last?
1. How many students in your classroom?
2. What is your brother doing in his bedroom?
3. Where do your family usually goes to on summer vacation?
4. How do her children go to the club?
5. Who is your favourite singer?
6. How long does the show last?
# Học Tốt #
1. are
2. news
3. comedy
4. cartoon
5. both
6. on
7. favorite
8. comedian
9. funny
1, are
2,News
3, Comedy
4, Cartoon
5,both
6, on
7, favourite
8, comedian
9, funny?
~Hok tốt~`
@@Nemesis
3.(x-2)+2x=10
<=> 5x - 6 + 2x = 10
<=> 7x = 16
<=> \(x=\frac{16}{7}\)
Vậy \(x=\frac{16}{7}\)
~ Chắc v
Học tốt
Trl :
10 - [12 - (-9 - 1)]
= 10 - [12 - 9 + 1]
= 10 - 12 + 9 - 1
= 6