Is (x+1)/(x^2-1) a polynomial
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(x+1)/(x^2-1)
= (x+1)/((x+1)(x-1))
= 1/(x-1)
So: Not a polynomial, because it is divided by a variable.
= (x+1)/((x+1)(x-1))
= 1/(x-1)
So: Not a polynomial, because it is divided by a variable.
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