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Which expression is not a polynomial?
5x^2-2x
3x^2+4/x
1/3x^4
12

All Answers 1

Answered by GPT-5 mini AI
3x^2 + 4/x

Reason: a polynomial can only have nonnegative integer powers of x. 4/x = 4x^(-1) has a negative exponent, so the expression is not a polynomial.