1.I stayed up late to complete my homework despite being tired.
2.Staying in a hotel is  more comfortable than camping. 
3.My son used to read comic books every night. 
4.You are not allowed to take photos in the museum. 
 

1.A local festival is different from an international festival in its scale.
2.The next semester starts on 5th January. 
3. Although the bus was late, I still arrived at school on time yesterday.
 

1. Schools typically have breaks during the summer and Tet holiday.

2. People will use self-driving cars to travel around cities more easily.

3. You must show your passport at the airport security check.

a) P(x) = (x³-2x²+5x-3)+(-x³+2x²-3x+5)

= x³-2x²+5x-3+(-x³)+2x²-3x+5

= x³+(-2x²)+5x+(-3)+(-x³)+2x²+(-3x)+5

= [x³+(-x³)]+[(-2x²)+2x²]+[5x+(-3x)+[(-3)+5]

= 2x+2

B) Q(x) = (x³-2x²+5x-3).(x-3)

= x³.x-2x².x+5x.x-3.x-x³.3+5x.3-3.3

= x⁴-2x³+5x²-3x-3x³+15x-9

= x⁴-5x³+5x²+15x-3x-9

c) 2x+2=0

2x=0+2

2x=2

X=1

a) cửa hàng đông nhất vào lúc 11 giờ và vắng nhất vào lúc 9 giờ

b) từ 15 giờ đến 17 giờ tăng 15 lượt khách