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Đáp án:
√2-√3
Giải thích các bước giải:
5-2.√6/√2-√3
=2 -2.√3.√2+3/√2-√3
=(√2-√3)²/√2-√3
=√2-√3
cân = pt giúp nhanh với sắp đi học thêm r P2O5 + KOH -> K3PO4 + H2O
Mn giúp Nayeon nốt 2 bài này hoi :'( . Nayeon bít ơn mn nhìu
III. Mark the letter A, B, c or D to show the underlined part that needs correction. 6. I will make some sandwiches before I will leave for work. A B C D 7. The rain came sudden and everybody got wet because nobody had an umbrella. A B C D IV. Mark the letter A, B, c or D on your answer sheet to indicate the correct answer to each of the following questions. 8. Mary has________many things to do that she has no time to go out. A. so B. too C. such D. very 10. She________French before she began studying English in 1990. A. had studied B. studied C. studies D. has studied 11. This is the shortest way to the city center; ________it is not the only way. A. but B. however C. therefore D. so 13. We________play chess with our father when we were children. A. use to B. were used to C. have used to D. used to 14. Thanks to the progress of science and technology, our lives have become ________ A. more and more good B. better and better C. the more and more good D. gooder and gooder 15. You can________the new words in the dictionary. A. give up B. put on C. look up D. goon 16. She hurried________she wouldn't be late for class. A. since B. as if C. unless D. so that V. Mark the letter A, B, c, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. 17. - "Let's go to Vung Tau on the weekend." - "________". A. That's a fine day B. That's a good trip C. Yes, please D. Yes, let's 18. - "More coffee? Anybody?" - "________". A. I don't agree, I'm afraid. B. I'd love to C. Yes, please D. It's right, I think (phần tiếp theo là hình ở dưới ạ)
tìm nghiệm nguyên $x^{2}$ + 2xy + 7(x+y) +2$y^{2}$ + 10 =0
Giúp em điền những chỗ còn thiếu vs ạ
Viết 3 câu ở thì hiện tại đơn Viết 3 câu ở thì hiện tại tiếp diễN Viết 3 câu đề nghị ngợi ý
Mọi ng giúp e bài 1 vs ạ.E cảm ơn mọi ng rất nhiều.
giải giúp mình với (x + 2y - 3) (x+2y+3) (x-2y+3)^2
mọi ng giúp e bài 2 vs ạ.E cảm ơn nhiều.
Bạn nào giải nhanh nhất mik vote cho 5* nha
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