# How do I find all the rational zeros of function?

##### 1 Answer

Jan 27, 2015

To find the zeroes of a function,

For polynomials, you will have to factor.

For example: Find the zeroes of the function

First, because it's a polynomial, factor it

Then, set it equal to zero

Set each factor equal to zero and the answer is

*Note that if the quadratic cannot be factored using the two numbers that add to this and multiple to be this method, then use the quadratic formula

to factor an equation in the form of