Bài 1 :

a) x={2,4}

b) x-1={-3,-2,-1,0,1,2,3,4}

=> x={-2,-1,0,1,2,3,4,5}

c) x+2={-7,-6,-5,-4}

=> x={-9,-8,-7,-6}

Bài 2 :

(x-3)(x+2)=0

=> x-3=0 => x=3

=> x+2=0 => x=-2

Vậy x=-2 hoặc x=3

BÀI 1

A) 3<X<5

=>X=4

B) -4<X+2<5

=>X-1\(\in\left(-3;-2;-1;0;1;2;3;4\right)\)

=> X-1=-3             => X-1=-2                  =>X-1=-1             =>X-1=0               => X-1=1

X=-2                              X=-1                        X=    0                 X=1                       X=2

=>X-1=2             => X-1=3             =>X-1=4

X=3                              X=4              X=5

C) -8<X+2<-3

=> X+2\(\in\left(-7;-6;-5;-4\right)\)

=> X+2=-7            =>X+2=-6          =>X+2=-5                =>X+2=-4

  X=-9                      X=-8                   X=-7                           X=-6

BÀI 2

\(\left(X-3\right).\left(X+2\right)=0\)

\(\Rightarrow X-3=X+2=O\)

\(TH1:X-3=0\)

              X=3

TH2: X+2=0

      X=-2

VẬY X=3 HOẶC X=-2

Cảm ơn câu trả lời của 2 bạn nhé ! :)

Bài 1 : a ) 

| 2x + 3 | = 5 

  2x          = 5 - 3 

  2x          = 2 

    x          = 2 : 2 

    x          = 1 

Cảm ơn bạn nhìu !

Ta có:\(\frac{16}{25}\)+ (x+\(\frac{1}{3}\))\(^2\)=1

           (x+\(\frac{1}{3}\))\(^2\)= \(\frac{9}{25}\)

          x+\(\frac{1}{3}\)= \(\frac{3}{5}\)

       x=\(\frac{4}{15}\)

\(\frac{16}{25}+\left(x+\frac{1}{3}\right)^2=1\)

\(\left(x+\frac{1}{3}\right)^2=1-\frac{16}{25}\)

\(\left(x+\frac{1}{3}\right)^2=\frac{9}{25}=0,36\)

\(x+\frac{1}{3}=0,6=\frac{3}{5}\)

\(x=\frac{3}{5}-\frac{1}{6}\)

\(x=\frac{13}{30}\)

nhớ k cho mk nhá, điểm mk đang âm, cảm ơn nhiều!!!!

k rồi mình làm cho

1)

\(-\left(-0.25\right)-2\frac{1}{5}=\frac{25}{100}-\frac{11}{5}=\frac{1}{4}-\frac{11}{5}=\frac{5}{20}-\frac{44}{20}=-\frac{39}{20}\)\(\frac{-39}{20}\)

anh sao ghi việt

Ý là bằng Tiếng Anh đó. Mình ghi hơi lộn :))))

mình cũng là thành viên mới hi hi

Mong các bạn giúp đỡ tớ

uk chào bn mk cx là thành viên ms! Bn "lì xì" cho mk nha

Amidst the immense mountains and forests of Lam Dong province, Dalat, a beautiful town, captivates all those who have been there once. I am one of those.

Dalat is often called the City of Eternal Spring. Flowers of all colors, with many species, the most numerous of which are orchids. More than anywhere else in Vietnam, Dalat sees flowers vie with one another in blossoming in spring. I used to get up early in the morning on fine days to welcome dawn on the highlands. Opening the windows, I had a breath-taking view of nature, and enjoyed the fragrance of wild flowers carried by the clouds, I felt relieved in my heart.

In the late afternoons, I often reserved for visits to the Valley of Love and Sigh Lake covered with quiet pine forests. Twilight on Dalat also brought many pictures and sensations. As a certain poet said, “Dalat is the city of honeymoon, the city of love”.

After two week is rest in Dalat, my health improved a lot. I think in the very near future Dalat will be Switzerland in the South-East Asia. The wind rustling through the pine forests, the roar of waterfalls, the chirping of birds and the clatter of horse ‘s hooves…all of these unforgettable memories always remain with me.

Camon b nhiều nha <3