Answer:
x=6
x=2
Explanation:
Fortunately for us, the function is written in factorized terms, so it is easier to find its roots.
The roots are the values for the 'x' variables that makes the functions goes to zero.
They are x=6 and x=2, any of those value make the function equals zero, or in other words, they are the points of interception with the 'y' axis.
To obtain these value
lets study the following condition
(x-6) * (x-2)=0
The above is accomplish when (x-6)=0 or (x-2)=0
We have two independent equations from where we obtain that x=6 and x=2