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phuongphuong16010404
2 năm trước
Chứng minh rằng với ba số thực a,b,c ta có e/ a^4 + b^4 >= a^3×b + a×b^3 f/ a^4 + 3 >= 4a g/ a^4 + b^4 <= a^6/b^2 + b^6/a^2;với a,b khác 0 Giúp mik luôn câu k với ah
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Ex4 Put the following verbs in the past simple tense Snow White was the daughter of a beautiful queen,who died when the girl(be)(1)............young.Her father(get maried)(2).................again,but the girl's stepmother was very jealous of her because she was so beautiful.The evil queen(order)(3)............a hunter to kill snow White but he couldn't do it because she was so lovely.He(chase)(4)..........her away instead,and she (take)(5).............refuge with seven dwarfs in their house in the forest .She (live)(6).............with the dwarfs and took care of them and they(love)(7).............her dearly.Then,one day the talking mirror(tell)(8).........the evil queen that Snow White was still alive.She(change)(9)...........hersslf into a witch and (make)(10)...........a poisoned apple.She(go)(11)..............to the dwarf's house disguised as an old ậm and tempted Snow White to eat the poisoned apple,which(put)(12).............her into an everlasting sleep.Finally,a prince(find)(13)..........her in the glass coffin where the dwasfs had put her and woke her up with a kiss.Snow White and the prince(be)(14)..........married and lived

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