SOLUTION: How do you factor this one? 12(c-r)^2+ 5r - 2 -5c

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Question 1068064: How do you factor this one?
12(c-r)^2+ 5r - 2 -5c
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
12%28c-r%29%5E2%2B+5r+-+2+-5c=12%28c-r%29%5E2-5%28c-r%29-2
To make it easier to see the factoring, let's make x=c-r ,
to get
12x%5E2-5c-2=12c-8x%2B3x-2=4x%283x-2%29%2B%283x-2%29=%284x%2B1%29%283x-2%29
Now we can go back to c and r ;
12%28c-r%29%5E2%2B+5r+-+2+-5c=%284c-4r%2B1%29%283c-3r-2%29