# How do you use the rational roots theorem to find all possible zeros of #x^4-5x^3-5x^2+23x+10#?

##### 2 Answers

Mar 19, 2016

#### Explanation:

Mar 19, 2016

#### Explanation:

By the rational root theorem the rational roots of the polynom can be:

If you try the roots, you will confirm that the real roots are -2 and 5:

Now you have to divide the polynom by :

Use the quadratic formula to solve this part: