can u explain this more clearly?? i need help and im confused

how do i find the length of a rectangle when the area is
(R cubed-24R-5) cm sqaured
and the width is
(R-5)cm
???
how would i be able to get (r^2+5r+1)

You must be referring to my reply to your post

http://www.jiskha.com/display.cgi?id=1262115865

If you have follow-up questions, please ask them in the original post, do not start a new one.

To do the type of question you asked, you must know how to do long division with algebraic expressions or synthetic division.

in Google, type "long algebraic division" and you will find many pages where the process is explained.