Answer
It is a polynomial $f(x) =4x+x^3$ of degree: $3$
Leading term: $x^3$
Constant: $0$
Work Step by Step
A polynomial can be defined as a function containing only terms where $x$ is raised to a positive, integer power or constant. We can see from the given function that it is a polynomial. The degree is equal to the power of the term with the highest power, so the degree is $3$. Also, the constant value is $0$.
The term with the highest degree is always known as the leading term; that is, $x^3$.
It is a polynomial $f(x) =4x+x^3$ of degree: $3$
Leading term: $x^3$
Constant: $0$
