Respuestas

2012-09-30T22:28:15+02:00

(4n^2-1/5)(4n^2+1-6)

(4n^2-1/5)(4n^2-5)

=16n^4-4/5n^2-20n^2+1

=16n^4-104/5n^2+1

Espero que te sirva saludos!!