[tex]( {m}^{2} - 2mn) \div m = m - 2n[/tex]
[tex] \frac{( {m}^{2} - 2mn)}{m} [/tex]
[tex] = \frac{ {m}^{2} }{m} - \frac{2mn}{m} [/tex]
[tex] = m - 2n[/tex]
