\(\Leftrightarrow M=\left(\frac{x\left(x-2\right)}{2\left(x^2+4\right)}-\frac{2x^2}{4\left(2-x\right)+x^2\left(2-x\right)}\right)\left(\frac{x^2-x-2}{x^2}\right)\)
\(\Leftrightarrow M=\frac{x\left(x-2\right)\left(2-x\right)-4x^2}{2\left(x^2+4\right)\left(2-x\right)}.\frac{x^2-x-2}{x^2}\)
\(\Leftrightarrow M=\frac{-x\left(x^2-4x+4\right)-4x^2}{2\left(x^2+4\right)\left(2-x\right)}.\frac{x\left(x-2\right)+\left(x-2\right)}{x^2}\)
\(\Leftrightarrow M=\frac{x\left(2-x\right)\left(x+2\right)}{2\left(x^2+4\right)\left(2-x\right)}.\frac{\left(x+1\right)\left(x-2\right)}{x^2}\)hình như sai sai đề
Đề đúng rồi cậu làm sai á