Đáp án:
Giải thích các bước giải:
Bài1· căn(27x^2)=3căn3x
căn (8xy^2)= 2(căn2x)y
căn(25x^3)=5x.cănx
căn(48 xy^4)=4y^2.căn(3x)
Bài2
1) = căn (13a^2)
2) = căn (15a)
3) = căn (3a)
4) = căn (2a^2)
Giải giúp em câu c,d với ạ em cảm ơn
complete the sentences with who, whose, where or which 1. The book................ i have just read is called Clockwork Angle. 2. It is a fantasy novel ................... was written by Cassandra Clare 3. The name of the girl.................is the heroine of the novel is Tessa Gray 4. The story is set in London,.................. all the action takes place 5. Tessa Gray is looking for her brother,.............has disappeared 6. Tessa gets help from two friends.................names are Will and Jem
She (kill) ... him yesterday Có giải thích :Đ
Tìm x, biết : $3^{x-2}$ + 5 · $3^{x-2}$ = 162
Chuyển thành câu bị động 1. You were wearing your new hat when I met you yesterday 2. He is preparing everything for the presidential election 3. Last Friday, when I came to Jane' s house, she had finished all exercises
LÀM GIÚP MÌNH BÀI HẰNG ĐẲNG THỨC CỦA LỚP 8 VỚI Ạ . GIẢI ĐÚNG MÌNH CHO 5 VOTE ĐÓ NHA ĐỀ: Tính: 1. (x+1)(X^2-x+1)= 2. (x-1)(x^2+x+1)= 3. (x-3)^3= 4. (2x+3)^2= 5. (3x-2)^2= 6. (3x-2)^3= 7. (5x-4)(5x+4)= 8. (5x+1)^3= 9. (1-4x)^3= 10. (x-5)(x^2+5x+25)= 11. (3x^2+5)(3x^2)=
Cho em hỏi 4 vật được làm bằng đồng Với ạ
AI NHANH EM CHO 5* a? Louis Braille (1)........ in 1809 in Coupvray. He was a French (2).... of blind. He himself was blind from the age of three and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked ability in both science and (3)....... ,he became famous in Paris an organist and violoncellist. In 1826 Braille bega the (4)......blind in institute. Braille is known for his idea of modifying the Barbier "point writing" system, used for coded army messages to enable the blind to read. Point writing consists of embossed dots and dashes on cardboard; the Braille system derived from it is used (5)......today, in slightly modified form, and (6) ......countries. many 1. A.is born. B. was born. C.bears. D.bore 2. A.principal. B.customer. C.engineer. D.teacher 3. A.music. B.mathematics. C. foreign language. D.literature 4. A.teach. B.to teach. C teaching. D.taught 5. A. succeed. B.success. C.successful. D.successfully 6. A.on B.in. C. at. D.over
Cho biết hiện tượng nào sau đây là hiện tượng vật lý, hiện tượng hóa học a) Trứng gà bị thối b) Mực hòa tan vào nước c) Nung Hin nóng chảy thành dạng lỏng d) Hiện tượng sương mù vào buổi sáng sớm
Giải phương trình sau : sin 7x -cos x=0 Giúp em với ạ
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