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tamaranim1 [39]
3 years ago
12

Help me please and show work, thank you

Mathematics
1 answer:
larisa [96]3 years ago
5 0

Answer:

Step-by-step explanation:

(a-b)³=a³-b³-3ab(a-b)

(2n-1)³=(2n)³-1³-3(2n)(1)(2n-1)

=8n³-1-12n²+6n

=8n³-12n²+6n-1

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