[(6x+1)^3][(27x^2+2)-(9x^3+2x)](3)[(6x+1)^2](6) over [(6x+1)^3]^2

Question

Help me simplify please? Here's what I got so far:

[(6x+1)^5]{(27x^2+2)-[x(9x^2+2)]}(18) over (6x+1)^6

It says in the back of the book (it's an odd problem that the answer is 27x^2-24x+2 over (6x+1)^4

Thanks!

Answer 1

Oh, wait...It should actually be this (sorry!)

{[(6x+1)^3][(27x^2+2)}-{(9x^3+2x)](3)[(6x+1)^2](6)} over [(6x+1)^3]^2