Respuesta:
4n^2-r^2
Explicación paso a paso:
(2n-r)(r+2n)
2nr+4n^2-r^2-2nr
^2= elevado a 2
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Respuesta:
4n^2-r^2
Explicación paso a paso:
(2n-r)(r+2n)
2nr+4n^2-r^2-2nr
4n^2-r^2
^2= elevado a 2