Hardcover paperback college books?

peter t

New member
I got this book for intermediate algebra http://www.amazon.com/gp/product/0321566718/ref=oss_product

But then I realized that I needed this book
http://www.amazon.com/Intermediate-Algebra-5th-Elayn-Martin-Gay/dp/0136007295/ref=pd_sim_b_1

I already bought the spiral bound one and i was wondering would there be any difference? the hardcover is 50 dollars more and im wondering why
 
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