Which of the following expressions is a polynomial in one variable?

Foundation

Mathematics Foundation

types of polynomial

Question

x¹⁰ + y⁵ + 8

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

$\sqrt{2} x^{2} - \sqrt{3} x + 6$

$3 \sqrt{x} + \frac{2}{\sqrt{x}} + 5$

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For polynomial in one variable, exponent of variable in each term should be a whole number.