Classify the following as linear,quadratic,or cubic polynomial:
$8x^{3} - 343$

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(C) The degree of a polynomial is the highest power of the variable present in the expression.
For the polynomial $8x^{3} - 343$,the highest power of the variable $x$ is $3$.
Since the degree of the polynomial is $3$,it is classified as a cubic polynomial.

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