x² + 5x + 6 = 0

⇒x² + 2x + 3x + 6 = 0

⇒x( x + 2 ) + 3( x + 2 ) = 0

⇒( x + 2 )( x + 3 ) = 0

⇒\(\left[\begin{array}{nghiempt}x+2=0\\x+3=0\end{array}\right.\)   ⇒\(\left[\begin{array}{nghiempt}x=-2\\y=-3\end{array}\right.\)

Vậy x = -2 và x = -3

x² + 5x + 6 = 0

⇒x²+ 2x + 3x + 6 = 0

⇒x ( x + 2 ) + 3 ( x + 2 ) = 0

⇒( x + 2 ) ( x + 3 ) = 0

⇒\(\left[\begin{array}{nghiempt}x+2=0\\x+3=0\end{array}\right.\)\(\Rightarrow\left[\begin{array}{nghiempt}x=-2\\x=-3\end{array}\right.\)

Vậy x = -2 và x = -3

She  doesn't go to school lately because she always gets up early.

            A                                 B                       C                       D

Laura is a Canadian boy. He is from Canada. He speaks English and British 

1 _________How are you______________? Fine thanks.

2 __________How old are you_____________? I’m fifteen.

3 __________Where are you from_____________? London.

4 _________Have you got one brother_______? Yes, I’ve got one brother.

5 _______How old is he_______? He’s eighteen.

a) Đặt M=1/2+1/2²+1/2³+...+1/2¹⁹⁹⁸

=>2M=1+1/2+1/2²+1/2³+...+1/2¹⁹⁹⁷

2M-M=(1+1/2+1/2²+1/2³+...+1/2¹⁹⁹⁷)-(1/2+1/2²+1/2³+...+1/2¹⁹⁹⁸)

M=1-1/2¹⁹⁹⁸

1, Our teacher punishes us today .

=> We are punished today by our teacher

2, my mother cleans the door once a week.

=>The door is cleaned once a week by my mother

3, They do not wash their hands after meals.

=> Their hands are not washed after meal

4,Why do you put your bag here ?

=> Why is this bag put here by you ?

5, The postman usually leaves the letter in the hall.

=> The letter is usually left in the hall by the postman

6, People spend a lot of money on advertising.

=>A lot of money is spent on advertising

7, Do they teach French here ?

=> Is Frech taught here by them ?

8,How do you spend this amount of money ?

=> How is this amount of money spent by you ?

9, He turns the vradio off before going out ?

=>The radio is turned off before going out 

1. A. onion                       B. country                      C. other                       D. lovely

2. A. armchair                 B. kitchen                      C. catch                       D. chemistry

3. A. post                         B. closet                        C. police                      D. phone

4. A. stove                       B. lose                            C. improve                  D. move

5. A. modern                   B. shopping                   C. orange                    D. awful

Is there any fruit juice in the refrigerator?

=>The new project is found worthless.

2.The committee appointed Alice secretary for the meeting

=>Alice was appointed secretary for the meeting by the committee .

3.They all voted the party a great success

=>The party was voted a great success ?

4.she left her relatives five million pounds

=>Five million pounds was left to her relatives by her

5,Have you send the christmas cards to your family?

=>Have the christmas cards been sent to your family?