How many integers n satisfy (n-2)(n+4)<0?
(n - 2) (n + 4) < 0
Note that this is true when
-4 < t < 2
So....the integers that make this true are -3, -2, -1, 0 , 1
All negative numbers, 0,1,2 only
so (-inf. to 2] 2 is included