Question is:Integrate x(2x+1)^8 dx in terms of x.
The Attempt at a Solution
Here is how i started off:by relabeling them.
let u = 2x+1. du/dx = 2.
So my terms now are: Integral (u-1/2)u^8 (du/2) <- this is where i am slightly confused i know i need to take out common term and just do i simple integration :/ can anyone hint me.