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Which expression is not a polynomial because the variable has power \(\frac{5}{6}\)?

Answer and explanation

Correct answer: \(x^{\frac{5}{6}}+4\)

In a polynomial, every exponent of a variable must be a non-negative integer, such as \(0,1,2,\ldots\). In \(x^{\frac{5}{6}}+4\), the exponent of \(x\) is fractional, so it is not a polynomial. In contrast, \(x^5+6\) has exponent 5 and is a polynomial. Exam tip: while identifying polynomials, check first for negative or fractional exponents of variables.

Related tags

PolynomialsDefinition Of PolynomialFractional ExponentsNon-PolynomialClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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