Let's try another one:
Find the zeros of
then draw a rough sketch of the graph:
What's his basic shape?
Let's find those zeros! How many will there be? Four, baby, FOUR! Not 3... not 5... 4!
real zeros: -2 , 2 (shoot throughs)
complex zeros: -2i , 2i
Find the zeros of the following functions, then draw a rough stetch of the graph