Mathematics, 01.03.2021 03:20 cannonkd

The following expressions are polynomial except $4 {x}^{3} - 5 {x}^{ - 2 } + 3$

$5 {x}^{2} + 2x - 1$
$2 {x}^{5} - 2 {x}^{2} - 2$
x + 9

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The following expressions are polynomial except

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