plz answer to be braniliest ....plzplzplz
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If u see carefully the terms involved in this expression are forming an identity
(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
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