Explicación paso a paso:
Espero que te sirva saludos :).
Respuesta:
La a es la correcta
(2n-1)^3
(2n-1) ((2n)^2-2×2n+1)
(2n-1) (2^2n^2-2×2n+1)
(2n-1) (4n^2-2×2n+1)
(2n-1) (4n^2-4n+1)
2n (4n^2-4n+1) - (4n^2-4n+1)
8n^3-8n^2+2n- (4n^2-4n+1)
8n^3-8n^2+2n-4n^2+4n-1
8n^3 + (-8n^2-4n^2) + (2n+4n) -1
= 8n^3-12n^2+6n-1
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Explicación paso a paso:
Espero que te sirva saludos :).
Verified answer
Respuesta:
La a es la correcta
Explicación paso a paso:
(2n-1)^3
(2n-1) ((2n)^2-2×2n+1)
(2n-1) (2^2n^2-2×2n+1)
(2n-1) (4n^2-2×2n+1)
(2n-1) (4n^2-4n+1)
2n (4n^2-4n+1) - (4n^2-4n+1)
8n^3-8n^2+2n- (4n^2-4n+1)
8n^3-8n^2+2n-4n^2+4n-1
8n^3 + (-8n^2-4n^2) + (2n+4n) -1
= 8n^3-12n^2+6n-1