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Which of the following expressions is a constant polynomial?

Answer and explanation

Correct answer: \(7\)

Since \(7\) has no variable, it is a constant polynomial with degree 0. \(7x\) and \(x+7\) contain the variable, while \(\frac{7}{x}=7x^{-1}\) is not a polynomial. Exam tip: powers of a variable in a polynomial cannot be negative.

Related tags

PolynomialsConstant PolynomialDegree Of PolynomialAlgebraClass 9 MathematicsDegree Of A PolynomialIntroduction To PolynomialsMathematics

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