Answer:
so if the x2 is x squared and you are trying to find the values of x where f(x) is 0 then they are -12 and 3
Step-by-step explanation:
we can factor these into (x+12)(x-3)
in order for (x+12)(x-3) to be 0 then one of them has to be 0
first is (x+12) = 0 so x is -12
second is (x-3) = 0 so x is 3
