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3 January, 04:57

Which expression is a polynomial?

A. 9x^7y^-3z

B. 4x^3-2x^2+5x-6+1/x

C. - 13

D. 13^-2

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Answers (1)
  1. 3 January, 07:48
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    I believe the answer is C.

    A polynomial cannot contain a negative number raised to the power (eliminating A. and D.) and a polynomial cannot contain any division by a variable (eliminating B.)

    C. is what I would consider a polynomial. It contains one term, and does not break any rules.
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