Respuesta :

Itz5151

Answer:

9m²-n²

Step-by-step explanation:

(3m+n)(3m-n)

This is so easy algebraic expression.

Just rewrite as,

  • [tex](3m) {}^{2} - n {}^{2} [/tex]

Simplifying,

  • [tex]9m {}^{2} - n {}^{2} [/tex]

[Alternate method is there]

Otras preguntas