Question

which of the following is not a polynomial

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

$x + \frac{1}{x}$
$9 {x}^{2} - 4x + 7$
$\frac{3}{2 }x {3} + 6 {x}^{2} - \frac{1}{5} x - 8$
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Answer 1

Answer:

x+1/x ................. ........