Everyone help me...Please..please answer my question....Thanks!
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12 tháng 2 2017
Do n+3\(⋮\)n+3 (*) => (n+3)2\(⋮\)n+3 hay n2+6n+9\(⋮\)n+3
=> n2+6n+9-(n2-7)\(⋮\)n+3 hay 6n+16\(⋮\)n+3
Từ (*) => 6n+18\(⋮\)n+3
=> 6n+18-(6n+16)\(⋮\)n+3 hay 2\(⋮\)n+3
=> n+3 \(\in\){-2;-1;1;2}
Vậy n \(\in\){1;2;4;5}
12 tháng 2 2017
Ta có: \(n^2-7⋮n+3\Leftrightarrow n^2-9+2⋮n+3\Leftrightarrow\left(n-3\right)\left(n+3\right)+2⋮n+3\)
\(\Rightarrow\)\(2⋮n+3\)
Vậy n+3 là Ước của 2
Ta có bảng sau:
| n+3 | 1 | 2 | -1 | -2 |
| n | -2 | -1 | -4 | -5 |
Vậy n=....
KK
0
LL
2
28 tháng 2 2020
You only need to give proof to Google that it's your account ,by providing the email adress in the sign in page .
If you have a video , then Youtube must have send you notifications ( maybe for comments , maybe for subscribers , but certainly for the upload ) . So , you'll need to search for those notifications , and then you have the email address .
On Saturday, 9 July 2016 18:17:35 UTC+2, bibi behbehani wrote:
I lost access to an account where I posted a video on Youtube. I want that video taked down, and I don't know how. It's my video and I dont want it on Youtube. If you can help me get it off, plz email me to send you the link to the video. But plz help me get it off. Thank you. I am now using another gmail account since I lost access to the other one. But I can assure you it's me and if you want proof you can email me.
HM
5 tháng 9 2015
Ta thấy : / x / > hoặc = x ; / y / > hoặc = y => / x / + / y / > hoặc = x + y ( với mọi x và y thuộc Q ) . (1)
/ x / > hoặc = -x => - / x / < hoặc = x ; / y / > hoặc = -y => - / y / < hoặc = y
=> -( / x / + / y / ) < hoặc = x + y . ( 2 )
Từ (1) và (2) => -( / x / + / y / ) <hoặc = x+y < hoặc = / x/ + / y /
=> / x + y / < hoặc = / x / + / y /
30 tháng 1 2022
Hello today I want to tell everyone something about Dragon Ball.
30 tháng 1 2022
Hello, today I want to tell everyone something about Dragon Ball.
What's your question
Thank you but i'm okay! Sorry! I'm very sorry!