Question

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Answer 1

refer the attachment for step by step explanation

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Answer 2

Answer:

Step-by-step explanation:

Using (a+b)³ = a³ + b³ + 3a²b + 3ab²

27a³ + 1/64b³ + 27a²/4b+ 9a/16b²

(3a)³ + (1/4b)³ + 3(3a)²(1/4b) + 3(3a)(1/4b)²

(3a+1/4b)³