If you set up a charity, who or what will you help, and why?

v_tb=\(\dfrac{s_1+s_2}{t_1+t_2}=\dfrac{90+80}{1.5+1}=68\)(km/h)

Tìm 5 tổ chức từ thiện hoặc tổ chức quốc tế và công việc của mỗi tổ chức bằng tiếng anh 

1. Do most people in your country get two days off a week?

2. Do you think leisure time is important?

3. Do you enjoy shopping?

18 C

1/ a) 3x(x²-6x+1)=3x³-18x²+3x
b) (x²+2x-3).(x-2)=x³+2x²-3x-2x²-4x+6=x³-7x+6
2/ a) x²-3x+xy-3y=x(x-3)+y(x-3)=(x+y)(x-3)
b) 2x²+x-3=2x²-2x+3x-3=2x(x-1)+3(x-1)=(2x+3)(x-1)
 

1. What did you enjoy doing in your free time as a child?

2. Do you prefer to spend your free time with other people or alone?

3. What is a common leisure activity in your country?

Answer the questions:
1. Who aarre you close to in your family?
2. What is your special moment with your family?
3. What is your favourite leisure activity?