K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

24 tháng 2 2020

-19/3 = \(-6\frac{1}{3}\) 

Vậy x lớn nhất là -6

11 tháng 4 2022

\(x-\dfrac{1}{8}=\dfrac{4}{x-2}\) hay \(x-\dfrac{1}{8}=\dfrac{4}{x}-2\) vậy bạn?

11 tháng 4 2022

\(\dfrac{x-1}{8}=\dfrac{4}{x-2}\)

=>\(\dfrac{\left(x-1\right)\left(x-2\right)}{8.\left(x-2\right)}=\dfrac{4.8}{\left(x-2\right).8}\)

=>khử mẫu

=>(x-1)(x-2)=32

.......

\(\dfrac{x}{3}-\dfrac{1}{y+1}=\dfrac{1}{6}\)

=>\(\dfrac{xy+x-3}{3\left(y+1\right)}=\dfrac{1}{6}\)

=>\(2\left(xy+x-3\right)=1\)

=>2xy+2x-6=1

=>2xy+2x=7

=>2x(y+1)=7

=>x(y+1)=7/2

mà x,y nguyên

nên \(\left(x,y\right)\in\varnothing\)

1 tháng 2

1/y+1=x/3-1/6

1/y+1=2x/6-1/6

1/y+1= 2x-1/6

=> 1.6=(y+1).(2x-1)

ta có bảng

y+1     6      1       

Past lives couldn't ever hold me down Lost love is sweeter when it's finally found I've got the strangest feeling This isn't our first time around Past lives couldn't ever come between us Sometimes the dreamers finally wake up Don't wake me I'm not dreaming Don't wake me I'm not dreaming All my past lives they got nothing on me Golden eagle you're the one and only flying high Through the cities in the sky I'll take you way back, countless centuries Don't you remember that you were meant to be My Queen of Hearts, meant to be my love Through all of my lives I'd never thought I'd wait so long for you The timing is right The stars are aligned So save that heart for me 'Cause girl you know that you're my destiny (d-destiny) Swear to the moon, the stars, the sons and the daughters Our love is deeper than the oceans of water I need you now, I've waited oh so long (Gimme love) I need you now, I've waited oh so long Passing seasons, empty bottles of wine My ancient kingdom came crashing down without you Baby child, I'm lost without your love Diamond sparrow, my moonlit majesty You know I need you, come flying back to me Through all of my lives I'd never thought I'd wait so long for you The timing is right The stars are aligned So save that heart for me 'Cause girl you know that you're my destiny (d-destiny) Respect to the moon, the stars, their sons and their daughters Our love is deeper than the oceans of water Save that heart for me And girl I'll give you everything you need (everything you need) Here's to our past lives, our mothers and fathers Our love is deeper than the oceans of water I need you now, I've waited oh so long, yeah (Gimme love) I need you now, I've waited oh so long I need you now, I've waited oh so long, yeah (Gimme love) I need you now, I've waited oh so long So save that heart for me 'Cause girl you know that you're my destiny (d-destiny) Respect to the moon, the stars, their sons and their daughters Our love is deeper than the oceans of water Save that heart for me And girl I'll give you everything you need (everything you need) Here's to our past lives, our mothers and fathers Our love is deeper than the oceans of wat

2x-1    1      6         ...

y         5      0

x        1       7/2

                   loại

18 tháng 12 2021

help me , giúp mình với 

khocroi

5 tháng 2 2022

7 nha  

HT

DT
14 tháng 6 2023

a) Để A là phân số thì : \(n-2\ne0=>n\ne2\)

b) Để A nhận giá trị nguyên âm lớn nhất 

\(=>A=-1\\ =>\dfrac{n-6}{n-2}=-1\\ =>n-6=-\left(n-2\right)\\ =>n-6=-n+2\\ =>n+n=6+2\\ =>2n=8\\ =>n=4\left(TMDK\right)\)

c) \(A=\dfrac{n-6}{n-2}=\dfrac{n-2-4}{n-2}=1-\dfrac{4}{n-2}\)

Để A nhận gt số nguyên thì : \(\dfrac{4}{n-2}\in Z=>4⋮\left(n-2\right)\\ =>n-2\inƯ\left(4\right)=\left\{\pm1;\pm2;\pm4\right\}\\ =>n\in\left\{3;1;4;0;6;-2\right\}\)

Đến đây bạn lập bảng giá trị rồi thay từng gt n vào bt A, giá trị nào cho A là STN thì bạn nhận gt đó ạ.

d) Mình nghĩ bạn thiếu đề ạ 

17 tháng 2 2017

1) để 2017/n+3 lớn nhất thì n+3 bé nhất và là số tự nhiên

suy ra n+3=1(vì mẫu không thể là 0)

suy ra n=-2 

Vậy n=-2

2)tương tự

Nhớ bấm đúng cho mình nha

28 tháng 1 2020

a)\(A=\frac{2n+3}{n-2}\left(n\:\ne2\right)\)

\(\Rightarrow\frac{2n-4+7}{n-2}\)\(=\)\(\frac{2\left(n-2\right)+7}{n-2}=\frac{2\left(n-2\right)}{n-2}+\frac{7}{n-2}=2+\frac{7}{n-2}\)

\(2\inℤ\Rightarrow\frac{7}{n-2}\inℤ\Rightarrow7⋮\left(n-2\right)\)\(\Rightarrow\left(n-2\right)\inƯ\left(7\right)=\left\{\pm1;\pm7\right\}\)

Ta có bảng :

n-2-7-117
n-515

9

Vậy \(n\in\left\{-5;1;3;9\right\}\)

16 tháng 9 2021

\(x^{20}=x\\ \Leftrightarrow x^{20}-x=0\\ \Leftrightarrow x\left(x^{19}-1\right)=0\\ \Leftrightarrow\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)

16 tháng 9 2021

\(x^{20}=x\)

\(x^{20}-x=0\)

\(x\left(x^{19}-1\right)=0\)

\(x^{19}-1=0\) hoặc x=0

⇔x=1 hoặc x=0