b, x-1/x+2=4/5 (x khác -2)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.


what does most of the students enjoy read?
chắc zậy
What things that the students mostly enjoy read ?
Sao gạch mỗi books zợ

\(\left(x-2\right)^{2012}+\left|y^2-9\right|^{2014}=0\)
\(\left(x-2\right)^{2012}\ge0;\left|y^2-9\right|^{2014}\ge0\)
\(\Rightarrow\hept{\begin{cases}x-2=0\\y^2-9=0\Rightarrow y^2=9\end{cases}}\)
\(\Rightarrow\hept{\begin{cases}x=2\\y=\pm3\end{cases}}\)
Ta có (x-2)2012 >= 0 với mọi x
Iy2-9I2014 >=0 với mọi y
Mà (x-2)2012+Iy2-9I2014=0
=> (x-2)2012=0 và Iy2-9I2014=0
<=> x-2=0 và y2-9=0
<=> x=2 và y={-3;3}

1. I always feel .... nervous.... before examinations ( nervous/ nervously )
2. He speaks English ...fluently... ( fluent/ fluently )
3. It is an ... interesting... book ( interesting/ interestingly )
4. He drove..careless...and he had an accident ( careless/ carelessly )
5. we didn't go out because it was raining.. heavily....( heavy/ heavily)
6. The football match was very.... exciting.....i enjoyed it ( exciting/ excitingly)
7. She tried on the dress and it fitted her..well ..... ( good/ well )
8. He never has accidents because he always drives...carefully......( careful/ carefully)
9. He behaved..stricly ...to wards his children ( strict/ stricly )
10. It's too dark to see....clearly...( clear/ clearly)
# HOK TỐT #
1. nervous
2.fluently
3.interesting
4.carelessly
5.heavily
6. exciting
7.well
8.carefully
9. strict
10.clear

\(A=\frac{\left|x-2017\right|+2018}{\left|x-2017\right|+2019}\)
\(A=\frac{\left|x-2017\right|+2019-1}{\left|x-2017\right|+2019}\)
\(A=1-\frac{1}{\left|x-2017\right|+2019}\)
A nhỏ nhất khi \(1-\frac{1}{\left|x-2017\right|+2019}\)nhỏ nhất
khi \(\frac{1}{\left|x-2017\right|+2019}\)lớn nhất
khi \(\left|x-2017\right|+2019\)nhỏ nhất
mà |x - 2017| \(\ge0\)
=> |x - 2017| + 2019 \(\ge2019\)
Vậy A nhỏ nhất khi A = 2019 khi x - 2017 = 0 => x = 2017

Nội dung: Là những suy tư của người mẹ trước ngày con vào lớp Một. Qua đó, thể hiện tình cảm yêu thương sâu sắc của mẹ. Đồng thời văn bản nêu lên vai trò to lớn của nhà trường đối với cuộc sống mỗi con người.

=1.4.2.5.....98.101/2.3.3.4.....99.100
=(1.2.3.....97.98)(4.5.....100.101)/(2.3.....99)(3.4.....100)
=1.101/99.3
=101/297
Bạn tuấn anh có thể giải thích rõ cho mik vì sao bạn có thể ra dược bước 1ko?

1 Despite the traffic jam, we (?) managed to arrive at the train station on time
2 In spite of / Despite having enough money, i don't want to buy a new computer
3 In spite of living near the school, both of them usually go to school late
4 In spite of the sickness, my brother still went to school yesterday
5 Despite healthy looking, he has a weak heart
Bạn làm ơn k mik đc ko? Thanks ^^
\(\frac{x-1}{x+2}=\frac{4}{5}\)\(ĐKXĐ\left(x\ne-2\right)\)
\(\Leftrightarrow\left(x-1\right)5=\left(x+2\right)4\)
\(\Leftrightarrow5x-5=4x+8\)
\(\Leftrightarrow5x-4x=8+5\)
\(\Leftrightarrow x=12\)
x-1/x+2=4/5
<=> 5(x-1)=4(x+2)
<=>5x-5=4x+8
<=>5x-5-4x-8=0
<=>x-13=0
<=>x=13
Vậy x=13