Question

Simplifica la Sig. Expresión

7m - 3n (2m - 5n)​

Answer 1

$\bf \textcolor{blue}{7m - 3n(2m - 5n) =} \\ \\ \bf \textcolor{red}{7m - 6mn + 15 {n}^{2} } \\ \\ ley \: de \: signos \\ \\ \bf \textcolor{cyan}{ + \times - = - } \\ \bf \textcolor{green}{ - \times - = + } \\ \bf \textcolor{green}{ + \times + = + } \\ \bf \textcolor{cyan}{ + \times - = - }$

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