1.write

2.wrote

3.has written

A lion is faster than a horse

A lion runs faster than a horse

The  Great Wall was built more early tan the White House

He is always earlier than his brother

This house is decorated more beautifully than that house

This village is more beautiful than that village

The driver drives more skillfully than that motorist

This man is more skillful than that man

Minh suggested donating money to the poor people

They decided to stay at the hotel

They spents 2 days painting the house

It takes me 2 hours to do homework

Would you mind waiting a little longer?I'm busy now

spooky nghĩa là ma quái còn kitaro là tên của một người

ok cảm ơn bạn

Lời giải:
$(y+2)(x^2+1)=2x^3+3x+1$

$\Leftrightarrow y+2=\frac{2x^3+3x+1}{x^2+1}$
\(=\frac{2x(x^2+1)+(x+1)}{x^2+1}=2x+\frac{x+1}{x^2+1}\)

$\Leftrightarrow y+2-2x=\frac{x+1}{x^2+1}$

 $x,y$ nguyên nên $y+2-2x$ nguyên $\Leftrightarrow \frac{x+1}{x^2+1}$ nguyên 

$\Leftrightarrow x+1\vdots x^2+1$

Khi đó có 2 TH xảy ra: 

TH1: $x+1=0$

$\Leftrightarrow x=-1$

Thay vô pt ban đầu suy ra $y=-4$ (tm) 

TH2: $x+1\neq 0$. Khi đó $x+1\vdots x^2+1$
$\Rightarrow x+1\geq x^2+1$
$\Leftrightarrow x^2-x\leq 0\Leftrightarrow x(x-1)\leq 0$

$\Leftrightarrow 0\leq x\leq 1$

Vì $x$ nguyên nên $x=0$ hoặc $x=1$. Thử vào pt ban đầu suy ra $(x,y)=(0,1), (1,3)$

Vậy.........

em cảm ơn

1 would visit

2 to leave

3 to sign

4 had sent

5 to do

6 would build

7 haven't finished

8 to use

1. Bad weather cause many road accidents

-> Many road accidents are caused by bad weather

7. My parents send me 200$ every month.

-> I.........am sent 200$ by my parents every month.......

2. I made this cake from flour and milk.

-> This cake..............was made from flour and milk by me...............

3. I will invite some of my friends to my birthday party next week.

-> Some of my friends...will be invited to my birthday party next week.....

4. How often do the children water the school garden?

->How often...is the school garden watered by the children?......

1.     They collected a lot of used paper last month. 

-> A lot of used paper were collected last month.

2.     Minh won’t give me a pen.

-> I won't be given a pen by Minh.

3.     My parents will hold a birthday party for me next Saturday.

-> A birthday party will be held for me by my parents next Saturday.

4.     We mustn’t use this cassette after 5:15 pm. 

-> This cassette mustn't be used after 5:15 pm.

9. They made the first telephone a long time ago.

-> The first telephone was made a long time ago.

10. We will hold an English speaking contest next week. 

-> An English speaking contest will be held next week.

1.     They collected a lot of used paper last month. 

-> A lot of used paper was collected last month.

Những câu còn lại cô nhất trí với em! ⚡

\(\left|2\overrightarrow{MA}+\overrightarrow{MB}\right|=\left|4\overrightarrow{MB}-\overrightarrow{MC}\right|\)

⇔ \(\left|2\overrightarrow{MA}+\overrightarrow{MB}\right|=\left|3\overrightarrow{MB}+\overrightarrow{CB}\right|\) (1)

Trên cạnh AB lấy O sao cho \(\dfrac{OA}{OB}=\dfrac{1}{2}\)

⇒ \(2\overrightarrow{OA}+\overrightarrow{OB}=\overrightarrow{0}\)

Trên cạnh tia đối của tia BC lấy E sao cho \(\dfrac{EB}{BC}=\dfrac{1}{3}\)

⇒ \(3\overrightarrow{EB}+\overrightarrow{CB}=\overrightarrow{0}\)

Vậy (1) ⇒ \(\left|3\overrightarrow{MO}+2\overrightarrow{OA}+\overrightarrow{OB}\right|=\left|3\overrightarrow{ME}+3\overrightarrow{EB}+\overrightarrow{CB}\right|\)

⇒ 3MO = 3ME

⇒ MO = ME

⇒ M nằm trên đường trung trực của OE 

d. G thuộc Ox nên \(G\left(2;0\right)\)

d qua G nên:

\(2\left(m^2-3m\right)+2m-5=0\)

\(\Leftrightarrow2m^2-4m-5=0\Rightarrow m=\dfrac{2\pm\sqrt{14}}{2}\)

b.

H thuộc Oy nên: \(H\left(0;3\right)\)

d qua H nên:

\(0\left(m^2-3m\right)+2m-5=3\)

\(\Rightarrow2m=8\Rightarrow m=4\)