Đáp án:
$=1-\sqrt3$
Giải thích các bước giải:
Ta có:
$\sqrt{\sqrt{28-16\sqrt3}}\\=\sqrt{\sqrt{4^2-2.4.2\sqrt3+12}}\\=\sqrt{\sqrt{(4-2\sqrt3)^2}}\\=\sqrt{4-2\sqrt3}\\=\sqrt{1-2\sqrt3+3}\\=\sqrt{(1-\sqrt3)^2}\\=1-\sqrt3$
#X
1. Every household/ use/ much / electricity / now./ 2. You/ reduce/ amount by/ turn off/ lights/ before/ go out./ 3. You /should/ prepare/ food/ carefully/ before/ turn on/ stove./ 4. Not turn on/ many lights/ same time. 5. If you/ follow/ simple rules/ you same money/ naltural resources./ Giúp mình với ạ, mình đang cần gấp hic...
1). If he does his homework, he (not worry)……………….. about it 2) If today (be)…………………. Sunday, the pupils can go swimming 3) I (take).......................... a walk if the weather were nice. 4) We would buy a house if we (have).................... enough money. 5) If I (be not) .................. tired, I would go to the movie with you. 6) If I (not have) ....................... class today, I would go shopping. 7. Bring him another if he (not/like)_____________ this one. 8. She (be)________ angry if she (hear)___________ this tomorrow. 9. Unless you are more careful, you (have)___________ an accident. 10. If you (like)_________, I (get)____________ you a job in this company. 11. If grandmother (be)___________ 5 years younger, she (play)__________ some games. 12. If he sun (stop)________shinning, there (be)___________ no light on earth. 13. If I (be)___________ a millionaire, I (live)___________ on Mars. 14. I wish I (be) ------------------------- an astronaut in the future. 15. I can’t swim. I wish I (can) --------------------- swim. 16. I wish I (meet) ---------------------- her yesterday. 17. She wishes she (be) ---------------------- there last year. 18. I wish you (not give) ----------------------- them my phone number yesterday. 19. Tom wishes someone (give) ---------------------------- him a job next month. 20. If they (invite)_______ yesterday, I (be)_______ is a good day tomorrow. 21. We (go)_______ swimming if it (be)_______ a good day tomorrow. 22. If the weather (be)_______ nice last day, I (go)_______ for a walk. 23. My dog always barks if he (hear)_______ anything unusual. 24. If he (not/ do)_______ come soon, I'm not going to wait. 25. If the phone (ring)_______, can you answer it? giúp mình với
Làm nhanh đc ctlhn, cần gấp lắm ạ
Tìm min : `P = x^2 + xsqrty + x + y - sqrty + 1`
$\left \{ {{\sqrt[3]{x+y+2} +\sqrt[3]{2x+4} =4 } \atop {\sqrt[3]{x+4} + \sqrt[3]{3y+2} } =4} \right.$
AI LÀ VUA CUỐI CÙNG CỦA THỜI ĐẠI PHONG KIẾN VIỆT NAM
giải giúp mình với mình đang cần gấp
Cho e hỏi tại s bài này ra 5n² +10=5 ×(n ²+2)
Một con lắc lò xo gồm vật nặng và lò xo có độ cứng k = 100 N/m, dao động điều hòa với biên độ 0,05 m. Mốc thế năng ở VTCB. Khi vật nặng cách vị trí biên 4 cm thì động năng của con lắc bằng bao nhiêu ?
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