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Which expression is not a polynomial in (x) but has a constant term?

Answer and explanation

Correct answer: \(x^{-4}+8\)

In \(x^{-4}+8\), the exponent of \(x\) is \(-4\), which is negative. In a polynomial, variable exponents must be zero or positive integers, so this is not a polynomial. The number \(8\) is its constant term. The other options have only non-negative integer exponents of \(x\), so they are polynomials. Exam tip: A negative, fractional, or variable exponent indicates that an expression is not a polynomial.

Related tags

Polynomial DefinitionNegative ExponentConstant TermAlgebraClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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