Em cos 1 its , các anh , chị giúp với ạ

(Mik muốn lập nhóm học tập vs các bạn năm nay lên lớp 8, ai có nhu cầu nghiêm túc học tập xin hãy ib vs mik) Tìm giá trị nhỏ nhất của biểu thức: `x^2-2xy+6y^2-12x+2y+45`

giải giúp em vs ạ , em cám ơn !!!!!

Tính `1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110+1/132+1/156+1/182+1/210+1/240+1/272`

Cần gấp trước 2h giúp vs nhanh nhất có thể E. WRITING I. Finish each of the following sentences in such a way that it means exactly the same as the sentence printed before it. 71. He won a prize at the competition because he spoke English fluently. Because of _______________________________________________________________. 72. Nowhere is more expensive than this restaurant. This restaurant ____________________________________________________________. 73. Mr. Lee said to his students Mr. Lee advised ____________________________________________________________. She wanted to know ________________________________________________________. 75. I last saw him when I was a student. I haven't __________________________________________________________________. II. Use the following sets of words and phrases to write a letter from Lilly to Elizabeth. Dear Elizabeth, 76. I / be / glad / receive / letter. 77. I / just / wonderful / news. 78. I / pass / final / examination / university. 79. My father / be / please / he / hear this. 80. He / already / promise / pay / holiday abroad / I / pass. 81. So / I / come / England. 82. I / like / study English / school / near / home. 83. I / look for / advanced course / perhaps / three / four hours / day. 84. You / help / find / one? 85. I / look forward / see / soon. Love, Lilly

Tìm giá trị lớn nhất của biểu thức $P$ $=$ $\sqrt{x+1}$ $-$ $\sqrt{x-8}$

helppppppppppp khó quá giúp mik vs lm hết c6 thoy nha

rút gọn nhanh nha

Các cao nhân giúp với ạ , có 1 ít

101. Visitors complained about the (organize) ___________________ in the old museum. 102. When Jenny made up for the play, she was (recognize) __________________. 103."Time of our lives" was the (office)________________song of the World Cup 2006. 104. Tom was accused of stealing some (confidence) ________________ documents. 105. The cost of (admit)________________ to the show is quite reasonable. 106. I watch the news everyday because it very (inform) ________________. 107. I (sleep)________________ this morning and was late for school. 108. He hoped the (employ) _________________ agency would find him a job. 109. Our school has a lot of (qualify)________________teacher .