a/ $a^2+4ab+4b^2\\=a^2+2.a.2b+(2b)^2\\=(a+2b)^2$
Vậy $a^2+4ab+4b^2=(a+2b)^2$
b/ $4a^2-4a+1\\=(2a)^2-2.2a.1+1^2\\=(2a-1)^2$
Vậy $4a^2-4a+1=(2a-1)^2$
$\#Lynn$
Tìm 3số tự nhiên nhỏ nhất liên tiếp có 3 chữ số.Thỏa mãn số thứ nhất chia hết cho 5,số thứ hai chia hết cho 6,số thứ ba chia hết cho 7.Giúp mk vs!!
1.Adam is in his room now. He …………………………………. (write) a letter to his pen-friend. He …………………………………….. (always / write) him a letter. 2..………………………… (he / go) to work by bus everyday? * giúp e với ạ e cảm ơn em cần câu trả lời 5 phút ạ e sẽ đánh 5 sao cho câu trl nhanh nhất ạ
Exercise 5: Rewrite sentence 1. He is rich but He isn’t happy. ( Although ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 2. Cars cause pollution but people still want them. ( although ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 3. Mr. Nam was successful in his life although he came from a poor family. ( despite ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 4. Though he is intelligent, he can’t do all these tests well. ( in spite of ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 5. In spite of his much experience in machinery , he didn’t succeed in repairing this machine . ( Although ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 6. Don’t shout at her in spite of her laziness. ( Though ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 7.It was raining heavily but I went swimming . ( in spite of ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 8. Though Lan is beautiful and intelligent, she is never proud of herself. (As ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 9. Lan is always admired by her friends because she is intelligent. ( Because of ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 10. We don’t spend much time on our homework because a lot of devices for the home were invented.( Because of ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 11. We always trustNambecause he is wise and honest. ( Because of ) @……………………………………………………………………………………………………………………………. ……………………………………………………………………………………………………………………………….. 12. Because of Lan’s poverty, she can’t continue her study at the university. ( Because ) @……………………………………………………………………………………………………………………………. ………………………………………………………………………………………………………………………………..
Đặt tên cho nhóm có các từ sau khai thác, thiết kế, giảng dạy, học tập
Giải hộ iem đii mọi người ớiiiii
Check giup minh cau nay sai cho nao thôi nhé :) Since the culture of Viet Nam was introduced all over the world, foreign tourists often buy traditional handicrafts.
Tìm 1 phân số, Biết rằng sau khi rút gọn ta được phân số 7/5 nếu bớt ở tử số 24 đơn vị đã được phân số bằng 1
Men giúp em vs ai e tkssssss nhìu
bủk bủk lmao lmao dảk dảk war wa
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