( m : 1 - m x 1 ) : ( m x 20018 + m + 20018 )
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Nguyễn Thị Thương Hoài
Giáo viên
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2 tháng 11 2023
a, A = 1 + 3 + 32 + 33 + ... + 32000
3.A = 3 + 32 + 33+ 33+... + 32001
3A - A = 3 + 32 + 33 + ... + 32001 - (1 + 3 + 32 + 33 + ... + 32000)
2A = 3 + 32 + 33 + ... + 32001 - 1 - 3 - 32 - 33 - ... - 32000
2A = 32001 - 1
A = \(\dfrac{3^{2001}-1}{2}\)
A
22 tháng 3 2022
6. The final examination will be held ___________ June 6th,20018.
A.in | B.on | C.at | D.to |
7. The girl wishes she ____________in Hue for festival next week..
A.has stayed | B.was staying | C.could stay | D.stay |
8. Please let Herry _______ you.
A. help B. to help C. helps D. helping
9. The football match was postponed _________the bad weather.
A. despite B. in spite C. because D. because of
10. Let’s go for a walk, _________we?
A. will B. shall C. do D. must
11. Harry: "What a terrific hairstyle!" Daisy: "_______________ "
A. Why don't you like it? B. Thank you C. My pleasure D. Yes, it is
12.This department store ________ three years ago.
A. built B. was built C. builds D. is built
13. If you ................... forty cigarettes a day, you would cough a lot.
A. smoke B. smoked C. would smoke D. smoking
14. Can you ____ the light? It’s too dark for us to do our homework.
A. turn on B. turn off C. turn in D. turn out
15. If you park your car in the wrong place, you must pay a(n) ____________.
A. ticket B. attention C. fee D. fine
(m : 1 - m x 1) : (m x 2018 + m+2018)
= (m-m) : ( m x 2018 +m +2018)
= 0 :( m x 2018 + m +2018)
=0