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Please HELPPP

Which of the following is a polynomial?

 

A. (x^6 - 4)/(x^-5 + 1)

B. x^4 - 2

C. x^-x + 2

D. x^-2 - 1

 Feb 3, 2022
 #1
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According to Wikipedia, a polynomial is an expression consisting of indeterminates (also called variables) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

 

The first one is just a mess.

The second one fits all conditions.

The third one has a variable exponent. 

The fourth one has a negative exponent. 

 

Thus the only one that is a polynomial is the second one, or x^4 - 2.

 

⚡⚡⚡

ShockFish

 Feb 3, 2022

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