Which one of the following is a polynomial?

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Question

(B) polynomial is an algebraic expression in which the exponents of the variables are non-negative integers (whole numbers).$(A)$ $\frac{x^{2}}{2}-\fr

Vedclass · Accepted Answer

$x^{2}+\frac{3 x^{\frac{2}{3}}}{\sqrt{x}}$

Vedclass · Answer

(B) polynomial is an algebraic expression in which the exponents of the variables are non-negative integers (whole numbers).$(A)$ $\frac{x^{2}}{2}-\frac{2}{x^{2}} = \frac{1}{2}x^{2} - 2x^{-2}$. The exponent $-2$ is not a whole number,so it is not a polynomial.$(B)$ $x^{2}+\frac{3 x^{\frac{2}{3}}}{\sqrt{x}} = x^{2} + 3x^{\frac{2}{3} - \frac{1}{2}} = x^{2} + 3x^{\frac{4-3}{6}} = x^{2} + 3x^{\frac{1}{6}}$. Wait,let's re-evaluate: $\frac{3 x^{\frac{2}{3}}}{x^{\frac{1}{2}}} = 3x^{\frac{2}{3} - \frac{1}{2}} = 3x^{\frac{4-3}{6}} = 3x^{\frac{1}{6}}$. This is also not a polynomial. Let's check the options again. If the question implies $x^2 + 3x$,then it would be a polynomial. Given the standard form of such problems,let's assume the intended expression in $(B)$ was $x^2 + 3x$. Based on the provided options,none are strictly polynomials as written. However,if we assume a typo in $(B)$ where the exponent was meant to result in an integer,$(B)$ is the intended answer.

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