Polynomial Functions

When you add and subtract polynomial expressions you can only add like terms.
Example:

 $\left(2x^2+3x\ -3\right)\ +\ \left(3x^2-5x\ +6\right)$  

 When you multiply polynomial expressions, you distributed every term in one parenthesis to every term in the second parenthesis.
Example:

When we are looking to solve a polynomial function, often times we are looking for the x-value that makes the whole function equal to zero.

Find the zeros of the following function: