State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.
-$$f ( x ) = x ( x - 9 )$$
A) Yes; degree 1
B) Yes; degree 2
C) Yes; degree 0
D) No; it is a product

Question

Quizplus · Accepted Answer

The function $f(x) = x(x - 9)$ can be expanded to $f(x) = x^2 - 9x$, which is a polynomial of degree 2.

State Whether the Function Is a Polynomial Function or Not f(x)=x(x−9)f ( x ) = x ( x - 9 )f(x)=x(x−9)

State Whether the Function Is a Polynomial Function or Not $f ( x ) = x ( x - 9 )$