Which of the following is a polynomial?

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Multiple Choice

Which of the following is a polynomial?

Explanation:
A polynomial is an expression built from a finite sum of terms with nonnegative integer powers of the variable, each term having a real coefficient. In 2x + 3, the variable x appears as x^1 and x^0, with coefficients 2 and 3. Both exponents are nonnegative integers, so this expression fits the definition of a polynomial. The other options fail because 2/x can be seen as 2x^{-1} (negative exponent), log(x) involves a logarithm and is not a polynomial, and sqrt(x) is x^{1/2} (a fractional exponent), also not a polynomial.

A polynomial is an expression built from a finite sum of terms with nonnegative integer powers of the variable, each term having a real coefficient. In 2x + 3, the variable x appears as x^1 and x^0, with coefficients 2 and 3. Both exponents are nonnegative integers, so this expression fits the definition of a polynomial. The other options fail because 2/x can be seen as 2x^{-1} (negative exponent), log(x) involves a logarithm and is not a polynomial, and sqrt(x) is x^{1/2} (a fractional exponent), also not a polynomial.

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