$ĐKXĐ: x\le1$
$\sqrt{1-x}=3$
$\Leftrightarrow 1-x=9$
$\Leftrightarrow x=-8(t/m)$
Vậy $x=-8$
Đáp án:
`x=-8`
Giải thích các bước giải:
`\qquad \sqrt{1-x}=3\quad (x\le 1)`
`<=>(\sqrt{1-x})^2=3^2`
`<=>1-x=9`
`<=>x=-8` (thỏa mãn)
Vậy `x=-8`
Chỉ cần đáp án ko cần giải thích Miễn đúng là đc
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III. ADJECTIVE CLAUSES Combine the following sentences using suitable relative pronouns ( who, whom, which, that, whose, where, when, why) 15. The bed was comfortable . I slept in it last night. ………………………………………………………………………………………………………… 16. Marie Curie was a French Physicist. Her discovery of radium is famous throughout the world. ………………………………………………………………………………………………………… 17. I don’t remember the day. I left school on that day. => . 18. She is the most intelligent woman. I’ve ever met this woman. …………………………………………………………………………………………………… 19. My brother came to see us. He is in the army. ………………………………………………………………………………………………………… 20. The strike at that factory is over now. It lasted three days ago. ………………………………………………………………………………………………………… 21.Professor Johnson is to visit the university next week. I have long admired him …………………………………………………………………………………..……… 22. Can you understand the question? He asked you the question last time. …………………………………………………………………………………..……… 23. Is that the girl? We saw her on T.V last night. …………………………………………………………………………………..……… 24. The farm produces milk. We visited it last Sunday. …………………………………………………………………………………..……… 25. At last he married the girl. He loved her. …………………………………………………………………………………..……… 26. The man is an engineer. We play with his daughter everyday. …………………………………………………………………………………..……… 27. He didn’t receive the letter. I sent him the letter last January. …………………………………………………………………………………..……… 28. He often tells me something about his village. He was born there. …………………………………………………………………………………..……… 29. The children like the funny stories. Their grandmother tells them those stories every evening. …………………………………………………………………………………..……… 30. Jack London is a famous American writer. He wrote “Iron heel”. …………………………………………………………………………………..……… 31.Our teacher assigned us the homework. We had to finish it within a week. …………………………………………………………………………………..……… 32. Ngoc has just moved to a new school. It was built two years ago. …………………………………………………………………………………..……… 33.The man is selling lottery tickets. He used to be very rich. …………………………………………………………………………………..……… 34.Hai’s friend is a very interesting boy. He came from Da Nang. …………………………………………………………………………………..……… 35. This is the boy . Her sister studied with me in high school ->……………………………………………………………………………………… 36. You can’t enjoy hiking in winter. Snow covers everything in winter. ->……………………………………………………………………………………… 37. She was born in Malaysia. Rubber trees grow well there . ->……………………………………………………………… 38. No one knows the school. My uncle taught at that school 10 years ago. ->……………………………………………………………………………………… 39. There are many seaside resorts. Tourists can enjoy their holidays there. ->……………………………………………………………………………………… 40. Please ask them the time. The train started the trip at that time. ->……………………………………………………………………………………… 41. New Year’s Day is a day. All family members gather and enjoy a family dinner then . ->……………………………………………………………………………………… 42. That man is handsome. I like his lifestyle so much. ->………………………………………………………………………………………
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`1`. “Remember to write to me soon,” she said to me. `→` She reminded `2`. “You’d better spend more time learning to write,” I said to the boy. `→` I advised `3`. “Would you like to have dinner with us tonight?” Mike said to Linda. `→`Mike invited Linda `4`. “Please, please turn off the T.V, John,” said Tom. `→` Tom begged 5. “Don’t lean your bicycles against my windows, boys,” said the shopkeeper. `→` The shopkeeper warned Giải thích chúng về cấu trúc câu tường thuật thôi, đừng dài dòng Nhanh! Cần gấp!!!!
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