# How do you use the rational root theorem to find the roots of # f(x)=x^5-3x^2-4#?

##### 1 Answer

Aug 21, 2015

(as far as I can tell) **not** have any rational roots (and therefore the Rational Root Theorem is of no use in determining the roots)

#### Explanation:

According to the Rational Root Theorem:

any rational roots of

must be of the form:

The only **possible** rational roots are therefore:

Since none of these give a value for

all possible rational roots provided by the Rational Root Theorem are extraneous.