Question

Which of the following are polynomial functions?

Answer 1

A polynomial function is a function involving only non-negative (positive and 0) integer powers of 'x', i.e. all terms with ' 'x' have a non-negative integer power, such as a quadratic $x^{2} x^{3}$ and so on.

Option E is the answer.

Rest all are wrong answers. they do not have positive integers.                      

Answer 2

Answer: Options C, D and E

Step-by-step explanation:

A polinomial function that only involves non-negative integer powers of the variable. so they have the form

a*x^n + .... g*x^1 * h

where a, g, h are constants.

In the first option, you can see that you have a 2/x term, so this has a negative power of x, then this is not a plynomial function.

The second option has a square root, that is defined as a x^(1/2) which is not an integer power, so this option can be discarded.

The other 3 options are polynomial functions.