Answer:
1/2 - Half of the numbers are odd
You know how a puppy is a kind of dog, but not all dogs are puppies? Well, the same thing is true for lots of other categories of things, including squares and rectangles.
Divide f(x) by x + 15
this comes to 2x^2 - 6 which represents the length
5 - 5 = 0
7 - 5 - 2 = 0
I think