How many roots does it have ?

Answer:
5
Step-by-step explanation:
Since the given function is 5th degree polynomial it has 5 roots as when ever a function is given in the following form:
f(x)=ax^n+bx^(n-1)+cx^(n-2)..........+constant then, it has n roots where n is the degree of that function and n should always be positive.