Tự dịch k dựa vào các app và web dịch

Tự dịch không dựa dẫm vào các phần mềm App hay web dịch

Tự dịch không dựa vào các web dịch hay App khác

https://img.hoidap247.com/picture/question/20210622/tini_1624379647829.jpg

kể về điều khiến bạn tức giận/ vui ngày hôm nay

Cho các số dương `a,b,c` thỏa mãn điều kiện `a^2+b^2+c^2=2` Tìm GTLN của biểu thức `B=sqrt{\frac{1}{2}(\frac{ab}{2+c^2}+\frac{bc}{2+a^2})}-\frac{1}{64}(\frac{a^4b^4+b^4c^4}{a^4c^4})`

giúp tôi bài này ạ - tôi cảm ơn trước ....

Các bạn giúp mình được không? Bài này mình thấy hơi khó hiểu. Theo mình là như vậy, còn nếu các bạn thấy dễ thì hãy giúp mình nhé. MÌNH CẢM ƠN CÁC BẠN!

For most North American households, lighting accounts (15)__________10 percent to 15 percent of the electricity bill. (16) __________, this amount can be reduced by (17) ___________ an ordinary 100-watt light bulb with an energy-saving bulb. These bulbs use a quarter of the electricity of standard bulbs and last eight times (18) ____________. Therefore, consumers can save about US$7 to US$21 per bulb. In Europe, there is a labeling scheme for refrigerators, freezers, washing machines and tumble dryers. The label (19) ____________ the consumers how much energy efficiency each model (20) ______with other appliances in the same category. Ultimately, these innovations will save money as well as conserve the Earth’s resources 13. A. on B. with C. for D. about 14. A. Therefore B. Although C. Moreover D. However 15. A. to replace B. replaced C. replacing D. replace 16. A. faster B. slower C. more D. longer 17. A. says B. tells C. reports D. talks 18. A. has compared B. compares C. compared D. is comparing Read the passage and then decide whether the statements that follow are TRUE or FALSE (1.0pt) Environmental pollution is the most serious problem facing mankind today. Air, water and soil are necessary to the survival of all living things. Badly polluted air can cause illness and even death. Polluted water kills many kinds of wild animals and other marine life. Pollution of soil reduces the amount of land for growing food. 19. The most danger of the environment is pollution. __________ 20. Polluted air, polluted water and polluted soil don’t affect our life. ___________ 21. Many kinds of wild animals and other marine life are polluting the water resources. ___________ 22. The pollution of soil makes the amount of land for growing food narrower. ___________ Read the passage again and choose the best answer ( A, B, C or D) (0.5pt) 23. The word “serious” in line 1 is nearest meaning to ______________ A. complicated B. safe C. dangerous D. popular 24. The main idea of this paragraph is _____________ A. The disadvantages of pollution B. Our environment C. The effective pollution D. Pollutants

cho p/t x^2 - 2(m-1)x +m^2 -6 =0 tìm m t/m : x1^2 + 4x1 +2x2 +2x1 =53