Explicación paso a paso:
Solución !
[tex]9 - (m - n) ^{2} [/tex]
[tex]9 - ( {m}^{2} - 2.m.n + {n}^{2} )[/tex]
[tex]9 - ( {m}^{2} - 2mn + {n}^{2} )[/tex]
[tex]9 - {m}^{2} + 2mn - {n}^{2} [/tex]
Saludos
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Explicación paso a paso:
TEMA → Factorizacion !
Solución !
[tex]9 - (m - n) ^{2} [/tex]
[tex]9 - ( {m}^{2} - 2.m.n + {n}^{2} )[/tex]
[tex]9 - ( {m}^{2} - 2mn + {n}^{2} )[/tex]
[tex]9 - {m}^{2} + 2mn - {n}^{2} [/tex]
Saludos