Question

(2b+b)3+(2b+c)3+(2c+a)3

Answer 1

3a+15b+9c is answer. I hope this will help you.

Answer 2

hi friend here is your answer
(2b+b)3+(2b+c)3+(2c+a)3
6b+3b+6b +3c + 6c+3a
3a + 15b + 9c
hope this was helpful to you