joycemullins
if n is an integer write an expression that must be a positive intger



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cinar
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n^2+1

tcarroll010
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or use absolute value x

cinar
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x=0?

cinar
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x+1 maybe..

tcarroll010
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yes, that will work.

joycemullins
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the answer is 2n^2, but how could i figure that out...preparing for test

cinar
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answer cannot be 2n^2, since for n=0, 0 is not a positive integer..

joycemullins
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thats the answer they gave in the book

cinar
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2n^2+1 or 2n^2+2.... are possible solution but not that one

joycemullins
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ok cool thanks