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Which option gives a correct example-explanation of a polynomial?

Answer and explanation

Correct answer: (x^2+1) because powers are (2) and (0)

A polynomial may contain several terms, constants, and numerical coefficients, provided every variable power is a non-negative integer. The power 0 is allowed because a constant can be viewed as a term involving \\(x^0\\). Therefore, the presence of a constant or addition is not a problem. What matters is the form of each power of x.

In \\(x^2+1\\), the first term has power 2 and the constant term has power 0. Both powers are valid, so this is a polynomial. The other choices contain \\(x^{-2}\\), \\(\sqrt{x}=x^{1/2}\\), or \\(1/x=x^{-1}\\); these involve a negative or fractional power of x. Thus option A gives the correct example and explanation.

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Definition-PolynomialExample-ExplanationValid-Powers

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