<=> (2x-1).(2x-1+2-x) = 0

<=> (2x-1).(x+1) = 0

<=> 2x-1 = 0 hoặc x+1 = 0

<=> x=1/2 hoặc x=-1

Vậy pt có tập nghiệm S = {-1 ; 1/2}

Tk mk nha

Dk: \(\orbr{\begin{cases}x\ne\frac{3}{2}\\x\ne-1\end{cases}}\)

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

\(x\ge1\)

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

x^2-1=11x-6x^2-3

7x^2-11x+2=0

\(\orbr{\begin{cases}x_{ }_{ }_1=\frac{11-\sqrt{65}}{14}< 1\left(loai\right)\\x_2=\frac{11+\sqrt{65}}{14}\left(nhan\right)\end{cases}}\)

\(x< 1\)

-(x^2-1)=11x-6x^2-3

5x^2-11x+4=0

\(\orbr{\begin{cases}x_1=\frac{5-\sqrt{41}}{10}_{ }\left(nhan\right)\\x_2=\frac{5+\sqrt{41}}{10}\left(loai\right)\end{cases}}\)

cảm ơn bạn

Ta có: \(\dfrac{\left(x+3\right)\left(x-3\right)}{3}+2=x\left(1-x\right)\)

\(\Leftrightarrow\dfrac{x^2-9}{3}+\dfrac{6}{3}=\dfrac{3x\left(1-x\right)}{3}\)

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

\(\Leftrightarrow x^2-3-3x+3x^2=0\)

\(\Leftrightarrow4x^2-3x-3=0\)

\(\Delta=9-4\cdot4\cdot\left(-3\right)=9+48=57\)

Vì \(\Delta>0\) nên phương trình có hai nghiệm phân biệt là 

\(\left\{{}\begin{matrix}x_1=\dfrac{3-\sqrt{57}}{8}\\x_2=\dfrac{3+\sqrt{57}}{8}\end{matrix}\right.\)

Vậy: \(S=\left\{\dfrac{3-\sqrt{57}}{8};\dfrac{3+\sqrt{57}}{8}\right\}\)

mik giải ko ghi đề nha

x+2+2x+1=4x

2+1=4x-x-2x

3=1x

3:1=x

3=x

vậy x=3

\(\left(6x^3-7x^2-x+2\right):\left(2x+1\right).\)

\(=\left(x+\frac{1}{2}\right).\left(x-1\right).\left(x-\frac{2}{3}\right):\left(x+\frac{1}{2}\right)\)

\(=\left(x-1\right).\left(x-\frac{2}{3}\right)\)

tui co bay max 5 nè

\(\Rightarrow\left[{}\begin{matrix}\dfrac{2}{3}-x=3\sqrt{3}\\\dfrac{2}{3}-x=-3\sqrt{3}\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}x=\dfrac{2-9\sqrt{3}}{3}\\x=\dfrac{2+9\sqrt{3}}{3}\end{matrix}\right.\)