(a-2b)³ এর মান কত?

A a³-8b³-6a²b+12ab²

B a³-8b³-6a²b-12ab²

C a³+8b³-6a²b-12ab²

D a³-8b³-12a²b-6ab²

Solution

Correct Answer: Option A

(a-2b)³
=(a)³-3(a)²2b+3a(2b)²-(2b)³
=a³-8b³-6a²b+12ab²

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