giup mik giai phep tinh nay 2x+3x=5
chieu mik di hoc roi giup mik nha
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\(\left(x^2+y^2+1^2-2xy-2x+2y\right)+\left(y^2+4y+2^2\right)+\left(13-1-4\right)=0\\ \)
\(\left(x-y-1\right)^2+\left(y+2\right)^2+8>0\) Bẫy hả Cái đầu không tồn tại sao có cái sau được
Ta có : \(4x-\left(2x+1\right)=3-\frac{1}{3}+x\)
(=) \(4x-2x-1=3-\frac{1}{3}+x\)
(=) \(4x-2x-x=3-\frac{1}{3}+1\)
(=) \(x=\frac{11}{3}\)
\(3x^2-2x.\left(5+1,5x\right)+10\)
\(=3x^2-2x.5-2x.1,5x+10\)
\(=3x^2-3x^2-10x+10\)
\(=10-10x\)
\(=10.\left(1-x\right)\)
\(x+\frac{1}{4}=\frac{1}{64}\)
\(x=\frac{1}{64}-\frac{1}{4}\)
\(x=-\frac{15}{64}\)
Vậy x = -15/64
hok tốt
==.==
III .
1. There is a pencil in the box .
2. There is a lamp on the table .
3. There are three pictures in this book .
4. There are some students in the classroom .
5. There are two couches in the room .
6. There are many people in the house .
7. There is a light on the wall .
8. There is a garden behind the house .
9. There are four boxes in the desk .
10. There are three birds in the sky .
V.
1. What's your sister doing ?
- She is doing her homework .
2.Who is it ?
- It's Tom .
3. How many people are there in your family ?
- There are five people in my family .
4. Are there four pictures on the wall ?
- Yes, there are
5. Is there a post office near here ?
- No, there isn't
6. What's your name ?
- My name is Lan .
7. What is there in the box ?
- There's an eraser in the box .
8. Who is Nam's sister?
- Mai is Nam's sister .
9. What are they doing ?
- They are watching TV.
10. What time is it ?
- It's ten ten.
Các từ láy trong truyen Son Tinh,Thuy Tinh la gi ?
Các ban giup mik voi mai mik phai di hoc troi 😱😱😱
Các từ láy trong truyện Sơn Tinh - Thủy Tinh là :
bàn bạc. tờ mờ, cuồn cuộn, lềnh bềnh. nao núng, ròng rã, cuối cùng, vững vàng, chán chê
( mk ko chắc mấy)
Bài làm của mk nek:
2x+3x=5
=> x.(2+3)=5
=> x.5=5
=> x=5:5
=> x=1
thanks you for your help tran hoai thuong