`5+3sqrt{3}`
`=3+2+3sqrt{3}`
`=3+3sqrt{3}+9/4-1/4`
`=(sqrt{3})^2+2.sqrt{3}.3/2+(3/2)^2-1/4`
`=(sqrt{3}+3/2)^2-(1/2)^2`
`=(sqrt{3}+3/2-1/2)(sqrt{3}+3/2+1/2)`
`=(sqrt{3}+2/2)(sqrt{3}+4/2)`
`=(sqrt{3}+1)(sqrt{3}+2).`
Làm choa mình bài 4 zới ạ bài khó quá mong mọi người giúp đỡ mình
Mong mọi người giúp đỡ Y x 5 =875-825 400+y=750-50
It was kind of him to show me the way . -> She....
Cho 2 góc xoy và yoz kề bù, vẽ tia ot là phân giác góc yoz, ot' là tia đối của tia ot. Chứng minh xot'=yot làm ra giấy và chụp câu trả lời nha ai làm nhanh và đúng thì mik sẽ lm đủ các bước
rút gọn và tính giá trị của các biểu thức sau
Eventually reached totally sketch for ahead heard much Clearly straight attracking pleased off fast there I used to go into the country to (31) ________ animals and plants, carrying my drawing materials in a bag. One day I was walking across a field, looking (32) ________ rabbits to draw. Lost in thought, I had not noticed a bull running towards me. About one hundred meters (33)________ was a tree under which I intended to sit and draw. Suddenly, I (34) ________ a noise behind me. I turned and saw the bull. I knew that a bull cannot see (35) ________ and notices only shape and movement. I did not panic but ran towards the tree, keeping the tree, myself and the bull in a (36) ________ line. To distract the bull, I then threw my bag to the right, so it was out of the line of the tree. The bull saw this sudden movement and headed towards the bag. I (37)______ the tree and climbed up it. From there I watched the bull (38) ________ my bag with its horns and feet. It continued to do this for fifteen minutes I was very (39) ________ to be, up the tree. (40) ________ the bull was satisfied and move off. I waited until it was a very long way(41) ________ and then got down from the tree and picked up my bag. I left the field as (42)________ as I could and then looked inside my bag. Everything in it was (43) ________ ruined.
helppppppppppppppsssssssssssssssss
Những từ được gạch chân: frightened, when, she was, with long black hair. Chọn từ sai và sửa lỗi 1. Jessie looked so frightened when she was in that white costume with long black hair. 2: My parents will lend me the money. Otherwise, I cannot afford the trip. A. I can afford the trip unless my parents lend me the money. B. I cannot afford the trip in case my parents lend me the money. C. If my parents lend me the money, I can afford the trip. D. Provided my parents lend me the money, I cannot afford the trip. Mọi người làm giải thích giúp e ạ. E cảm ơn
Vẽ đậu mầm hoang mang NL:ảo thực sự luôn các bn ạ
Xếp từ nhỏ đến lớn: `0; 1/2009; -1/28; -1/2008`
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