Question

plz do this question

Answer 1

$27 {a}^{3} + \frac{1}{64 {b}^{3} } + \frac{27 {a}^{2} }{4b} + \frac{9a}{16 {b}^{2} } \\ 27 {a}^{ 3 } + \frac{27 {a}^{2} }{4b} + \frac{9a}{16 {b}^{2} } + \frac{1}{64 {b}^{3} } \\ {(3a)}^{3} + 3 {(3a)}^{2} \frac{1}{4b} + 3(3a) {( \frac{1}{4b} )}^{2} + {( \frac{1}{4b} )}^{3} \\ {(3a + \frac{1}{4b} )}^{3}$

Answer 2

Hope u may understand the writing.

If helps, please mark it as brainliest ^_^