Here you go:
a) f(x)= (3x-1)(x+2)
This is factoring. It helps you find the zeros if you set this equal to zero. You can clearly identify what the zeros are.
b) (3x-1)(x+2)=0
x=1/3, x=-2
Plug those back into the equation to see if they work. In this case they do so those are your answers.
