Question

is 3x^2+4x^-1+5 a polynomial?
$3x^{2} + {4x}^{ - 1} + 5$
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Answer 1

Answer:

$no \: \\ because \: equation \: in \: the \: form \: of \\ a _{n}x {}^{n} + a _{n - 1} {x}^{n - 1} + ......... + a _{0} \\ where \: n \: is \:equal \: to \: whole \: number \\ is \: called \: polynomial.$

$so \\ 3 {x}^{2} + 4x {}^{ - 1} + 5 \\ is \: not \: \: polynomial \: because \\ power \: of \: x \: is \: negative \: ( not \: a \: whole \: number)$