Question

Which expression is not a polynomial ?

A. 8x^10+ 2x^5
B. 5x^5
C. x^5+2
D. 5x^-1+4x^-2

Answer 1

`5x^(-1)+4x^(-2)`

Explanation:

A polynomial expression is an expression that does not contain negative exponents. Also it does not have exponent in the denominator .

A.
`8x^(10)+ 2x^5` is a polynomial

B.
`5x^5` is a polynomial

C.
`x^5+2` is a polynomial

D.
`5x^(-1)+4x^(-2)`. it has negative exponent so it is not a polynomial.