Resolver m2x-m^2>mx-4

$$m 2 x - m ^ { 2 } > m x - 4$$

Ebatzi: x

$$\left\{\begin{matrix}x>-\frac{4-m^{2}}{m_{2}-m}\text{, }&m_{2}>m\\x\in \mathrm{R}\text{, }&m_{2}=m\text{ and }|m|<2\\x<-\frac{4-m^{2}}{m_{2}-m}\text{, }&m_{2}<m\end{matrix}\right.$$

Ebatzi: m_2

$$\left\{\begin{matrix}m_{2}>\frac{mx+m^{2}-4}{x}\text{, }&x>0\\m_{2}\in \mathrm{R}\text{, }&\left(m>0\text{ and }x<\frac{4-m^{2}}{m}\right)\text{ or }m=0\text{ or }\left(x>\frac{4-m^{2}}{m}\text{ and }m<0\right)\\m_{2}<\frac{mx+m^{2}-4}{x}\text{, }&x<0\end{matrix}\right.$$