Question

Please do this question it's a request

Answer 1

= (3a)^ 3 + (1/4b)^3+ 3 * (3a)^2 *(1/4b) + 3 *3a*(1/4b) ^2
= (3a+ 1/4b) ^3

Answer 2

Hope you may understand the writing.

If helps, please mark it as brainliest ^_^