induction proof manipulation problem

Question

starting with the LHS, how do you show

$(k/30)(k+1)(6k^3+9k^2+k-1)+(k+1)^4$= $(k+1)/30(k+2)(6(k+1)^3+9(k+1)^2+(k+1)-1$

as you can probably tell its part of my induction proof but i cant show this how is it done? thanks

Sorry edit its -1 on the end