MN ƠI KHẨN CẤP !!!! KHẨN CẤP !!! CỨU EM VỚI (T~T) (T~T)
Combine each of the following pairs of sentences into one sentence using so as / in order where necesary
1. Mary prepares her lesson carefully. She wants to get high marks in class
2. the thief changed his address all the time. He didn't want to be foumd by the police
3. They did their job well. They hoped to get a higher salary
4. You should walk slowly. You can be followed by your sister
5. I am studying hard. I want to keep pace with my classmates
6. They are climbing higher. They want to get a better view
7. He worked late last night. He wanted to be free to go away tomorrow
8. Put the milk in the fridge. We want to make sure it won't spoil

GTNN
A = 4x\(^{^{ }2}\) - 12x + 10
B = 3y\(^2\) + 6y + 5

C/m : ( n + 3 )\(^3\) - ( n - 3 ) \(^{^{ }3}\) \(⋮\) 18 \(\forall\) n

cho x + y = 1; x - y = 3. Tính x\(^2\) - y\(^{^{ }2}\)

C/m :
( a + b + c ) \(^3\) - a\(^3\) - b\(^3\) - c\(^3\) = 3( a + b ) ( b + c ) ( c + a )

Cho \(\Delta\)ABC, về phí ngoài \(\Delta\)ABC vẽ \(\Delta\)ABD. M,N lần lượt là trung điểm của AD và BC. C/m 2MN \(\le\) BD + AC

cho \(\Delta\)ABC có AB > AC. D là trung điểm của BC. Lấy E \(\in\) AB, F \(\in\) AB : BE = CF. So sánh \(\widehat{DEF}\)và \(\widehat{DFE}\)

cho \(\Delta\)ABC có hai đường trung tuyến AE \(\perp\) BC. C/m BC < 2AC