Giúp tớ vớii ạaa! Camon nhieuu
1.the students are clever. they can understand the lessons easily ( using "enough")
=> The students __________________
K
Khách
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B
17 tháng 2 2023
41........ in listening to pop music
42 ........ small for my daughter to wear
43 ........... largest country in the world
44 ........ the owner of that house
45 ........ necessary to do exercise regularly
2 tháng 11 2018
Rewrite the sentences:
1. These students are very clever and always get the highest marks at school.
They are ...CLEVER ENOUGH TO GET THE HIGHEST MARKS AT SCHOOL..
2. My father's got a lot of work during the week and he can't pay any attention to me
My father's got..SO MUCH WORK DURING THE WEEK THAT he can't pay any attention to me..
3. She 's clever. She can't have done such a stupid thing
(She's...CLEVER ENOUGH TO NOT TO SUCH A STUPID THING.
DT
Đỗ Thanh Hải
CTVVIP
30 tháng 4 2021
1. The kitchen is clean. My family eats in the kitchen.
==> The kitchen where my family eats is clean
2. My students are very clever. My students have poor parents.
==> My students, who have poor parents, are very clever
3. She enjoys singing English songs. Those English songs are written by him.
==> She enjoys singing English songs which are written by him
4. The water isn't clean. We drink the water.
==> The water which we drink isn't clean
5. They hate this chocolate. Its flavor is terrible.
==> They hate the chocolate whose flavor is terrible
6. Do you know the woman? You are talking to the woman.
==> Do you know the woman whom you are talking to?
7. "Hurry up," she said to us.
==> She told us to hurry up
8. "Give me the key," he told her.
==> He asked her to give him the key
9. "You need to study harder.", Sam said to Peter.
==> Sam told Peter that he needed to study harder
10. "Sit down, Caron" he said.
==> He asked Caron to sit down
11. "We are staying in this hotel tonight", they said.
==> They said that they were staying in that hotel that night
12. "Take off your shoes," she told us.
==> She told us to take off our shoes
13. "I don't go swimming very often.", she said.
==> She said that she didn't go swimming very often
TL
19 tháng 1 2021
1. Orange juice is ...............better than.........................coffee (GOOD)
2. Hanh is .................the cleverst...................students in the class . (CLEVER)
3. Cars are ....................more expensive than...................motorbikes (EXPENSIVE )
4. Mai is...............the most beautiful.........................girl of three sisters . (BEAUTIFUL)
5. The blue dress is...............cheaper than....................the red one (CHEAP)
6. Whatching television is ........more intersting than..................reading books . (INTERESTING)
7. This apartment is ..............the most suitable.........................for your family (SUITABLE)
8. Mount Everest is ............is the highest.........................mountain in the world . (HIGH)
9. Walking is ...............slower than...........................running ( SLOW )
10. A new house is ................more expenisve than.....................an old one (EXPENSIVE)
LT
19 tháng 1 2021
1. Orange juice is ...................better than.....................coffee (GOOD)
2. Hanh is ....................the cleverest................students in the class . (CLEVER)
3. Cars are ....................more expensive than...................motorbikes (EXPENSIVE )
4. Mai is..................the most beautiful......................girl of three sisters . (BEAUTIFUL)
5. The blue dress is..................cheaper than.................the red one (CHEAP)
6. Whatching television is ..............more interesting than............reading books . (INTERESTING)
7. This apartment is ...................the most suitable....................for your family (SUITABLE)
8. Mount Everest is ..................the highest...................mountain in the world . (HIGH)
9. Walking is .......................slower than...................running ( SLOW )
10. A new house is ................more expensive than.....................an old one (EXPENSIVE)
B
17 tháng 4 2023
1 ........will be rebuilt next year
2 .......met each other for ten years
3 ..... of Liberty was presented to the United State by France in 1876
4 ........ too high for the children to reach
5 ...... on animals should be stopped
6 ..... her child not to cry
7 .......mind if I turn on the television?
8 ......... rather you didn't use the office phone
9.........asked the students not to throw things away
10 ........ suggest that we go to the movie now
11 ....goes to Ho Chi Minh City in order to visit his friend
12 smoked
13 ..... interesting to learn ENglish
14She shows me where to get the tickets
15 The boy who is talking to Lan is my classmate
16 The wall has been painted white
17 .......told to go away
18 ...... will be looked after carefully
19 She asked me if I was good at Maths
20 They said that they had attended course of cooking
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1 without
2 for
-Tham khảo c2 bV
3 at - on
4 of - from
-Tham khảo c4 bV
5 to - on
6 of
7 among
8 of
9 into
10 for
KV
20 tháng 7 2023
a) \(A=\left(x+5\right)^2-\left(x+3\right)^2\)
\(=\left[\left(x+5\right)-\left(x+3\right)\right]\left[\left(x+5\right)+\left(x+3\right)\right]\)
\(=\left(x+5-x-3\right)\left(x+5+x+3\right)\)
\(=2\left(2x+8\right)\)
\(=4x+16\)
b) \(B=\left(4x+1\right)^2-\left(2x+1\right)^2\)
\(=\left[\left(4x+1\right)-\left(2x+1\right)\right]\left[\left(4x+1\right)+\left(2x+1\right)\right]\)
\(=\left(4x+1-2x-1\right)\left(4x+1+2x+1\right)\)
\(=2x\left(6x+2\right)\)
\(=12x^2+4x\)
c) \(C=\left(3-4x\right)^2-\left(2x-1\right)\left(8x-9\right)\)
\(=9-24x+16x^2-16x^2+18x+8x-9\)
\(=\left(16x^2-16x^2\right)+\left(-24x+18x+8x\right)+\left(9-9\right)\)
\(=2x\)
d) \(D=\left(4+2x^2\right)-\left(1-4x\right)\left(4-x\right)\)
\(=4+2x^2-4+x+16x-4x^2\)
\(=\left(2x^2-4x^2\right)+\left(x+16x\right)+\left(4-4\right)\)
\(=-2x^2+17x\)
e) \(E=\left(2-3x\right)^2-2\left(2-3x\right)\left(3x+5\right)+\left(3x+5\right)^2\)
\(=\left(2-3x+3x+5\right)^2\)
\(=7^2\)
\(=49\)
15 tháng 4 2022
Câu 8:
\(x^2+\left(2m+1\right)x-m^2=0\)
a=1; b=2m+1; c=-m2
Vì ac<=0 nên phương trình luôn có nghiệm
Theo đề, ta có: \(A=\left(x_1+x_2\right)^2-8x_1x_2\)
\(=\left(2m+1\right)^2-8\left(-m^2\right)\)
\(=4m^2+4m+1+8m^2=12m^2+4m+1\)
\(=12\left(m^2+\dfrac{1}{3}m+\dfrac{1}{12}\right)\)
\(=12\left(m^2+2\cdot m\cdot\dfrac{1}{6}+\dfrac{1}{36}+\dfrac{1}{18}\right)\)
\(=12\left(m+\dfrac{1}{6}\right)^2+\dfrac{2}{3}\ge\dfrac{2}{3}\forall m\)
Dấu '=' xảy ra khi m=-1/6
"The students are clever enough. They can understand the lessons easily.
My answer is correct, isn't it?