I rationalized but the denominator will still be zero. Where do I go from here? I took crap notes when we went over it in class.
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Edited by Cheat: 1/4/2014 5:23:36 AMIsn't that a zero over zero case? Take the derivatives of both the top and bottom to get your answer. At least I think...it's been a while. EDIT: I tried to do it in my head and came up with 1/6. I have no idea if it's right and am too lazy to go get paper.
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It's a good thing I took a class for college with a fairly small amount of math. I hate math
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65184651567+++++
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Pro tip: x - 9 = (sqrt(x) - 3) * (sqrt(x) + 3)
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Next time take better notes..