cho phương trình $x^4-6x^2+4=0$. chứng minh rằng phương trình ó 4 nghiệm phân biệt: x1;x2;x3;x4

Cho tam giác ABC ( AB<AC). Trên tia AC lấy điểm M sao cho AM = AB. Gọi I là trung điểm của BM . a) chứng minh góc BAI = góc MAI b) tia AI cắt BC tại D, chứng minh tam giác BAD=MAD c) Qua D kẻ DE // AB ( E thuộc AC). Vẽ EF là tia phân giác của góc DEC ( F thuộc DC). Chứng minh rằng EF // AD d) Vẽ tia Ax là tia đối của AB, Ay là tia phân giác của góc xAC, EK vuông góc với Ay tại K. Chứng minh rằng : 3 điểm K , E, F thẳng hàng

Mn lm giúp mik vs POM chuyển thành PON ak!

mình đang cần gấp ạaa, sẽ vote 5*

a) (2√3 +√5 ) √3-√60 b) ( √99-√18- √11) √11+3√22

vẽ ít nhất 4 bé đậu mầm nhá mọi người

Exercise 2: Complete the sentences with the correct form of words If you___________(find) a wallet in the street, what would you do with it? I must hurry. My friend____________(be) annoyed if I___________(not/be) on time. If I________(be) a bird, I_____________(not/want) to live my whole life in a cage. I didn’t realize that Gary was in the hospital. If I____________(know) he was in hospital, I___________(go) to visit. If you_____________(pour) oil on water, it_____________(float) If the phone____________(ring), can you answer it? If I______________(have) wings, I______________(not/have to) take an airplane to fly home. A: What will we do tomorrow? B: Well, if it___________(be) a nice day, we____________(go) to the beach. A: You look tired. B: If you_____________(not/wake) me up in the middle of the night, I__________(not/be) tired. This soup isn’t very good. it____________(taste)better if it___________(not/be) so salty. Unfortunately, I didn’t have my address book with me when I was in New York. If I___________(have) your address, I____________(send) you a postcard. I think there are many cars. If there_____________(not/be) so many cars, there___________(not/be) so much pollution. The accident was your fault. If you___________(drive) more carefully, it_____________ (not/happen). People___________(be) able to fly if they____________(have) feathers instead of hair. Last night Alex ruined his sweater when he washed it. If he___________(read) the label, he______________(not/wash) it in hot water. Mn giúp em và giải thích nha

Mình học nâng cao nên mình không biết có đúng lớp ko. What is iv.

mn cứu e vs ạ e cần gấp trc 2h40 ạ

use the word given and other words to completr each sentence 1.I'd be greatful if you could check this time(checking) They....on the project 2.someone stole his credit card last week(had) He...last week 3.this music reminds me of my childhood(brings) This music...of my childhood 4.If i am told in advance,I can arrange things Provided...in advance,I can arrange 5.He had never seen such a huge plane(before) Never...such a huge plane 6.He was made to wait two hours too see the boss(kept) The boss....hours before he saw him 7.Sheila doesn't like fish.Ann doesn't like fish either(nor) Neither.....fish 8.Paul regretted telling lies(wished) Paul...lies 9.The bus came late,so he was late(earlier) If the bus...not have been late 10.I hope you have fun at the reception.(yourself) I hope...at the reception