Cho a,b,c là các số hữu tỉ t/m ab+bc+ca = 2023
CMR: A=\(\sqrt{a^2+2023\left(b^2+2023\right)\left(c^2+2023\right)}\) cùng là số hữu tỉ

1. They told us " Our friends will get the award for their highest scores in that competition.

2. He said " I will go to school by bú tomorrow with my friends.
3. His brother told him " You can use my computer today, bue tomorrow I'll need it."
4. Mai said " I can not go to the movies with u Nam"
5. " You are my best friend" , Jane said to us.

Cho tam giác ABC nhọn, BE,CF là đường cao cắt nhau tại H.
a) C/m: tam giác ABE đồng dạng tam giác ACF
b) C/m góc AEF=góc ABC;   FA.FB=FC.FB
c) G đối xứng F qua AC, EG cắt BC tại D, c/m A,H,D thẳng hàng

HELP ME PLS

I.                   Choose the sentence that is the best completed by the world given

1: The weather was auful. We didn’t enjoy our camping holiday.( Because of)

2: They were tired. They tried to finish their project on time( Despite)
3: Paul doesn’t think about the planet. He wastes so much water( If)
4:We should stop cutting down so many trees. We endanger our oxygen supply ( Unless)
5: People begin recycle. They generate much less trash ( When)
6: We are damaging the ozone layer. The ozone layre is necessary for human exist ( EVEN THOUGH )
7: Sue is suffering from skin cancer. Shw was exposed to radiation when she was young ( so)
HELP ME PLSSSSSSSSSSSSSSSS