\(\Leftrightarrow\left(3-x\right)^2\left(x+2\right)=\left(2x-2\right)^2\) Đk \(x\ge-2\)\(\Leftrightarrow\left(9-6x+x^2\right)\left(x+2\right)=4x^2-8x+4\)\(\Leftrightarrow9x+18-6x^2-12x+x^3+2x^2=4x^2-8x+4\)
\(\Leftrightarrow x^3-8x^2+5x+14=0\)
\(\Leftrightarrow\left(x-7\right)\left(x-2\right)\left(x+1\right)=0\)
=> x=