tôi không làm d bài này
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
VN
Võ Ngọc Phương
VIP
28 tháng 12 2023
\(S=1+2+2^2+2^3+...+2^{29}\)
\(S=\left(1+2+2^2\right)+\left(2^3+2^4+2^5\right)+...+\left(2^{27}+2^{28}+2^{29}\right)\)
\(S=7+2^3.\left(1+2+2^2\right)+...+2^{27}.\left(1+2+2^2\right)\)
\(S=7+2^3.7+...+2^{27}.7\)
\(S=7.\left(1+2^3+...+2^{27}\right)\)
Vì \(7⋮7\) nên \(7.\left(1+2^3+...+2^{27}\right)⋮7\)
Vậy \(S⋮7\)
______
\(2^{x+1}+2^x.3=320\)
\(=>2^x.2+2^x.3=320\)
\(=>2^x.\left(2+3\right)=320\)
\(=>2^x.5=320\)
\(=>2^x=320:5\)
\(=>2^x=64=2^6\)
\(=>x=6\)
\(#NqHahh\)
\(#Nulc`\)
14 tháng 3 2018
a, Câu cảm thán mang nghĩa phủ định
b, Câu cảm thán mang nghĩa phủ định
c, Câu nghi vấn với ý nghĩa bác bỏ
d, Câu nghi vấn với ý nghĩa thể hiện cảm xúc (ngao ngán)
Đặt những câu có ý nghĩa tương đương:
- Không đẹp gì cả!
- Không có chuyện đó đâu!
- Bài thơ chẳng không hay.
- Cụ không biết chứ tôi có sung sướng đâu.
20 tháng 5 2021
dạ chào oog cháu xin trả lời 1+1=....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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20 tháng 5 2021
1 + 1 = 2
Nội qui tham gia "Giúp tôi giải toán"
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.
3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
8 tháng 3 2022
| fglguylfigyfgy;ORGY;rguy;ROFGUYULkgrlugISUYR | |
| 913037019 | |
| 6679034 |
TL:
Bài nào hả bn???
HT
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