`i)9x²-12x+4`
`=(3x)²-2.3x.2+2²`
`=(3x-2)²`
`g)xy^2+1/4x^2y^4+1`
`=(1/2xy^2)^2+2.1/2xy^2+1^2`
`=(1/2xy^2+1)^2`
mk gửi nha~
$#chúc tus học tốt!!$
calli: i love macbook air n/l: có ai thik macbook như tui hoq?
Lúc bé dưới nước áo đen Lớn khôn áo lục nhảy lên trên bờ. Biết bơi, biết hát, biết bò Có đầu không cổ, mắt không lông mi, lông mày. Đó là một câu đố nêu được một số nét tiêu biểu của con ếch: khi mới nở là con nòng nọc ếch ở dưới nước, có màu đen, khi lớn lên ếch mới có màu xanh lục. Ếch không có cổ, mắt không có lông mi, lông mày .Ếch là động vật nhỏ sống lưỡng thê, vừa ở dưới nước vừa ở trên cạn. Lưng ếch có màu xanh vàng hay màu nâu xám, điểm một số chấm đen. Ếch có tài giấu mình trong đám cỏ xanh hay trong hồ nước nếu không chú ý thì không nhận ra ếch ở đâu. Khi có động, chỉ cần hai bước là ếch nhảy tùm xuống nước, hoặc nhanh nhẹn nhảy khỏi mặt nước lao vào đám cỏ rậm.(...) a. Đoạn trích trên thuộc thể loại văn bản nào ?Vì sao? b. Chỉ ra các biện pháp nghệ thuật được sử dụng trong đoạn trích trên? c. Tìm các câu văn có yếu tố miêu tả con ếch và cho biết tác dụng của của yếu tố miêu tả đó?
giải phương trình sin(x+10độ)=3/5
b) tính giá trị biểu thức x=3-2căn2
90. It is desirable that no one else _______ about the problem. A) doesn’t know B) know C) to know D) will know 91. That she was chosen Miss Turkey _______. A) made me happy B) nobody was glad about it C) everybody approved it D) everyone present voted in her favor 92. Whether they do it or not _______. A) don’t make any difference B) depends on various factors C) created a big problem D) will cause a lot of disturbance 93. I am satisfied _______. A) that she came third in the competition. B) it was our victory against enemies C) what you promised to do D) will make her happy, I believe 94. The fact that they blamed us for the accident _______. A) which was not our fault B) was surprising C) at which a person was killed D) I wasn’t involved 95. _______ is a fact. A) That the poor have a hard life B) The world is round C) He came first D) What is he saying 96. Did _______ help him in his career? A) the fact that his father was a professor B) he was rich and friendly C) that he won a scholarship D) his teacher recommended him 97. It is incredible that _______. A) she study very hard B) will be the result C) he undergo an operation D) he has passed his exams 98. It is necessary that everyone _______ here on time. A) will be B) be C) are D) to be 99. “If I were you, I’d open a bank account because interest is high now” I told her. I suggested that she _______ a saving account. A) would open B) will open C) open D) had opened 100. Our teacher wishes he _______ another profession. A) chose B) had chosen C) would choose D) has chosen 101. I wish the teacher ______ us more about the exam before it takes place. A) would tell B) has told C) had told D) tells 102. I wish you _______ here now. I miss you a lot. A) are B) were C) had been D) will be 103. I wish you _______. I’m sure you would enjoy joining us. A) could come B) had come C) may come D) would come 104. She won’t help me. I wish she _______ me. A) will help B) would help C) helps D) had helped 105. I wish I _______ the last bus. Now I’ll have to walk. A) didn’t miss B) hadn’t missed C) wouldn’t miss D) wouldn’t have missed 106. Don’t you wish we _______ tonight? A) weren’t going B) aren’t going C) don’t go D) hadn’t gone 107. It is raining. I wish it _______. A) hadn’t rain B) didn’t rain C) weren’t raining D) isn’t raining 108. When it was too late, he wished he _______ a better husband. A) has been B) had been C) were D) would be 109. You can’t change things simply by wishing they _______ different. A) are B) will be C) would be D) were 110. I wish he _______ to Tokyo with me last weekend. A) came B) would come C) had come D) could come 111. I wish that you _______ such a bad headache because I’m sure that you’d have enjoyed the party. A) didn’t have B) hadn’t had C) wouldn’t have D) won’t have 112. I wish that I _______ with you last summer. A) went B) could go C) have gone D) could’ve gone 113. You might have cleaned the bath after you’d used it. I wish you _______ the bath after using it. A) had cleaned B) cleaned C) would clean D) clean 114. You might come to work a bit earlier on Mondays. I wish you _______ a bit earlier on Mondays. A) had come B) would’ve come C) were coming D) would come 115. You might have remembered my birthday. I wish you _______ my birthday. A) had remembered B) remembered C) would remember D) could remember 116. You might make less noise. If only you _______ less noise. A) had made B) made C) would make D) might make 117. If only I _____ busy yesterday. I could have helped you with the problem. A) weren’t B) hadn’t been C) wasn’t D) haven’t been 118. He wishes his father _____ him some shoes before the new term starts. A) was buying B) was going to buy C) would buy D) had bought 119. I wish our school _______ a bigger library than it has. A) had had B) would have C) had D) will have 120. I wish we _______ late for this film. I can’t follow the story. A) didn’t arrive B) hadn’t arrived C) wouldn’t arrive D) wouldn’t have arrived giúp em vớiiiii
Cho tam giác ABC cân tại A có M là trung điểm của BC. Biết AB = 17 cm, BC = 16 cm. Tính AM.
Bằng 1 đoạn văn khoảng 10 câu phát biểu cảm nghĩ về bé Hồng trong đoạn văn " Trong lòng mẹ " . Đoạn văn có sử dụng . Một câu ghép , gạch chân chỉ rõ giúp mình , mình cần gấp
Lấy giúp mk mỗi cái một ví dụ S+V+More/less+O/N
1 thiên niên kỉ bằng bao nhiêu năm 1 năm bằng bao nhiêu tháng 1 thế kỉ bằng bao nhiêu năm 1 thập kỉ bằng bao nhiêu tháng
Complete the sentences with the suitable form of the adjectives or adverbs in brackets 1.Tokyo is one of (liveable/livable) cities in the world 2.Universal Studios is by far (good) place to visit in Singapore 3.Of the four participants, Bill is (little) exprienced 4.I ran pretty far yesterday, but I ran even a lot (far) today
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