ta có:
$(2^9+2^7+1)x(2^{23}-2^{21}+2^{19}-2^{17}+2^{14}-2)$
$=2^{23}+(2^{23}+2^{23}-2^{24})+(2^{18}-2^{17}-2^{17})$
$=2^{32}+1$
$=>2^{32}+1$ là hợp số chú ý biểu thứ trong ngoặc đều $=0$
$=>2^{32}+1$ ko phải là số nguyên
Xin hay nhất
Ko là số nguyên tốDo 2^32 chia 3 dư 2=> 2^32 + 1 chia hết cho 3Mà 2^32+1 >3=> 2^32 +1 là hợp số
III. Choose the best answer among A, B, C or D to complete the sentences. (2.5 pts) Question 15.“ Thanks a lot for your wonderful gift.” _ “ ______________ “ A. You are welcome B. Thank you C. Cheers D. Have a good day Question 16.Taylor: “It’s very kind of you to invite me to your party.” - Edward: “____________” A. No, thanks. B. OK. That’s great C. Good idea, thanks D. It’s my pleasure. Question 17.You have read this article on the webside, _________ ? A. don’t you B. aren’t you C. haven’t you D. have you Question 18.___________ he tried his best, he couldn’t win the race. A. If B. Although C. But D. Because Question 19.I wish I _________ your home village again some day. A. can visit B. visit C. visits D. could visit Question 20. _______ train times are different on __________ Sundays. A. A - the B. The – the C. D. The - Question 21. If we ___________ water carefully, more people will have fresh water. A. will use B. would use C. using D. use Question 22. Public _________ in this city is very good, and it’s not expensive. A. travel B. vehicle C. journey D. transport Question 23. Mr Quang _________ he would be back in an hour. A. spoke B. said C. told D. talked Question 24. She failed the exam ____________ her laziness. A. because B. because of C. although D. despite
Giúp mình gấp nhanh với ạ, mình đang cần thi :((
cho 2 đường thẳng xx' và yy' cắt nhau tại O biết 1 trong các góc tạo thành có số đo bằng `50^o` hãy cho biết số đo các góc còn lại?
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Giữa 2 số 3,14 và 3,15 có bao nhiêu số thập phân ? A) 1 số B) Không có số nào C) Vô số
cho ∆ABC có góc A=90độ đường cao AH cắt đường phân giác BD tại I a chứng minh IA.BH=IH.AB b chứng minh AB²=BH.BC c kẻ HK song song với BD (K thuộc AC).Chứng minh AD²=DK.DC
Chọn từ có cách phát âm khác Question 1. A. accident B. jazz C. stamp D. watch Question 2. A. this B. thick C. maths D. thin Question 3. A. gas B. gain C. germ D. good Question 4. A. spear B. gear C. fear D. pear
`\text{Chứng minh tích của 2 số tự nhiên liên tiếp chia cho 3 thì dư 0 hoặc 2.}`
my sister is a nurse. She works in the.................................
Cho Parabol (P): y = x² và dường thẳng (d): y = 2(m+1)x - $m^{2}$ - 2 Tìm m để (d) cắt (P) tại hai điểm phân biệt có hoành độ x1, x2, thỏa mãn $x1^{3}$ + $x2^{3}$ = -4
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