The Attempt at a Solution
Sorry, i didn't know how to put this on the forum so i did it on paint and uploaded it to tinypic.
Here is the image of the "attempted" solution.
(x-1)8+(x-1)7 => (x-1)7x (im guessing the c is a constant?)The x is already "back": differentiate [itex](1/9)(x- 1)^9+ (1/8)(x- 1)^8+ C[/itex].
I'll be frank here, if you don't know what to do with the c then you probably don't have a clue why you put it there in the first place. You should go back and read up on the fundamentals of integration.