Bài 1: 

a: \(\Leftrightarrow x-1\in\left\{1;-1;3;-3\right\}\)

hay \(x\in\left\{2;0;4;-2\right\}\)

Ta có : \(\left(3x-2\right)\left(4x+3\right)=\left(2-3x\right)\left(x-1\right)\)

\(\Leftrightarrow12x^2-8x+9x-6=2x-3x^2-2+3x\)

\(\Leftrightarrow12x^2-8x+9x-6-2x+3x^2+2-3x=0\)

\(\Leftrightarrow15x^2-4x-4=0\)​

\(\Leftrightarrow15x^2-10x+6x-4=0\)

Lỗi :vvvv

\(\Leftrightarrow10x\left(\dfrac{3}{2}x-1\right)+4\left(\dfrac{3}{2}x-1\right)=0\)

\(\Leftrightarrow\left(10x+4\right)\left(\dfrac{3}{2}x-1\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=-\dfrac{2}{5}\\x=\dfrac{2}{3}\end{matrix}\right.\)

Vậy ...

(3x-2)(4x+3)=(2-3x)(x-1)

=(3x-2)(4x+3)-(2-3x)(x-1)

=(3x-2)(4x+3)+(3x-2)(x-1)

=(3x-2)(4x+3+x-1)

=(3x-2)(5x+2)

=15x²-10x-4+6x=15x²-4x-4

ra 19/27 nha vì : 

2/3+1/3x(-4/9+5/6):7/12=

2/3+1/9x(-8+15/18):7/12

2/3+1/3(7/18):7/12

2/3+7/54:7/12

2/3+7/54x2/7

2/3+2/54 (Lưu ý ; QĐMS ) =108+6/162=114/162=57/81=19/27

1.a) \(\Leftrightarrow\) 3x+10-2x =0

  \(\Leftrightarrow\text{ 3x-2x=-10}\)

   \(\Leftrightarrow x=-10\)

b) coi lại có thiếu ngoặc ko nhé

cứ nhân vào dấu ngoặc rồi làm như thường

https://giaibaitapvenha.blogspot.com/2017/12/en-voi-do-homework-for-you-e-trai.html

1 Letters are typed by Mary in the office

2 You will be helped by his father tomorrow

3 Human life has completely been changed by science and technology

4 This bottle was broken by Peter

5 English is being learned in the room

6 Maths will be being studied this time next week 

7 English has been learning by me for 8 years

8 Max's car was being fixed by him from 3 pm to 5 pm yesterday

9 My mind can't be changed

10 I hadn't been told about it

11 He isn't liked

12 Her telephone number isn't known by ,e

13 The children will be brought home by my students

14 I was sent a present last week

15 We were given more information by her