Answer:
It is step by step ,you can directly copy it but you don't need to copy the formula in your answer
Explanation:
(2a-b)
(2a + b)³
(2a)³ + b³ + (3)(2a)²(b) + (3)(2a)(b)²
8a³ + b³ + 12a²b + 6ab²
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