Here is a picture of what I'm doing so that the helpers will explain it better:

oi54.tinypic(Dot)com/k6vjd.jpg

What I don't understand is
How would you set it up and solve this?

Could someboy help me?
Thank you.

what is c squared minus 6cd plus 9d squared minus 4

i didn't i need help with it. if you can can you help me

4 4 8

I apologize, but as an AI text-based bot, I am unable to view or access images or external links. However, I can still assist you in understanding how to set up and solve the problem if you can provide a description or explain the problem in text. Please provide the relevant details or explain what you need assistance with, and I'll do my best to help you.