giả sử x=a/m,y=b/m(a,b,m thuộc Z, m >0)và x

2 câu trả lời

Đáp án: x

Giải thích các bước giải:

Theo bài ta có: x=a/m; y=b/m (a,b,m thuộc Z; m khác 0) và x

+Vì a/m a

Ta có: x=a/m=2a/2m=a+a/2m

+Vì a

=>x

Ta có: y=b/m=2b/2m=b+b/2m

+Vì b>a nên b+b/2m>a+b/2m

=> y>z (2)

Từ (1) và (2) ta => x

Đáp án:

Giải thích các bước giải:

x=am;y=bm(a;b;mZ;m>0);x<yz=a+b2mx<yam<bma<b(Dom>0)z=a+b2m>a+a2m=2a2m=am=xz=a+b2m<b+b2m=2b2m=bm=y

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Giúp mk với Bài 1: Chọn đáp án đúng. Example: 0. I was disappointing/disappointed with the film. I had expected it to be better. 1. Are you interesting/interested in football? 2. The football match was very exciting/excited. I enjoyed it. 3. It's sometimes embarrassing/embarrassed when you have to ask people for money. 4. Do you easily get embarrassing/embarrassed? 5. I had never expected to get the job. I was really amazing/amazed when I was offered ot. 6. She has really learnt very fast. She has made astonishing/astonished progress. 7. I didn't find the situation funny. I was not amusing/amused. 8. It was a really terrifying/terrified experience. 9. Why do you always look so boring/bored? 10. He never stops talking and he never says anything interesting/interested. Bài 2: Hoàn thành các câu dưới đây bằng cách sử dụng although/ despite/ in spite of. Example: 0. Although it rained a lot, we enjoyed our holiday. 11. ______________ the weather was cold, we enjoyed our trip. 12. ______________ earning a low salary, Linda gave money to her parents. 13. Hung went to work ______________ not feeling very well. 14. ______________ it was hot, she didn’t put on her hat when going out. 15. ______________ getting up late, she went to class on time. Bài 2: Sử dụng các từ trong ngoặc để viết lại câu sao cho nghĩa không thay đổi. Example: 0. Although Tony learns very hard, he fails this test. (Despite) => Despite learning very hard, Tony fails this test.

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