tìm x biết:5x^2=13x

`5x^2=13x`

`=>5x^2-13x=0`

`=>x.(5x-13)=0`

`=>`\(\left[ \begin{array}{l}x=0\\5x-13=0\end{array} \right.\) 

`=>`\(\left[ \begin{array}{l}x=0\\5x=13\end{array} \right.\) 

`=>`\(\left[ \begin{array}{l}x=0\\x=\dfrac{13}{5}\end{array} \right.\) 

Vậy `x=0; x=\frac{13}{5}`