Which expression is… - QuestionCove
OpenStudy (anonymous):

Which expression is a polynomial?

4 years ago
OpenStudy (anonymous):

4 years ago
OpenStudy (anonymous):

I would probably go with 2/x +3x

4 years ago
OpenStudy (anonymous):

That function is identical to 3x+2x^(-1)

4 years ago
OpenStudy (anonymous):

So b.gif?

4 years ago
OpenStudy (anonymous):

4 years ago
OpenStudy (anonymous):

no! I was wrong

4 years ago
OpenStudy (anonymous):

it is d.gif

4 years ago
OpenStudy (anonymous):

y

4 years ago
OpenStudy (anonymous):

why is it that?

4 years ago
OpenStudy (anonymous):

The answer is d for a few reasons. Polynomials must have no variables in their denominator, but but a and b both have those; therefore, a and b are not answers.

4 years ago
OpenStudy (anonymous):

A polynomial must have multiple terms, in d, we have terms of x^1 and x^0

4 years ago
OpenStudy (anonymous):

D is also a linear expression, which by its definition is a polynomial

4 years ago
OpenStudy (anonymous):

We cancel out d because polynomials can't have roots of x; no square roots of letters allowed xD

4 years ago