Expert: Scott A Wilson - 12/13/2010

Question
Having trouble figuring out problems that have something to do
with the zero of the function. Here is a problem could you
work it out-- f(x)=16x-4x

Answer
If the problem is f(x) = 16x - 4x, the x can factor out.
That is, we have f(x) = (16-4)x, and since 16-4=12,
that is f(x) = 12x.

Now there might have been a ² that was dropped.  Most problems have the first term squared, so it might have been f(x) = 16x² - 4x.

That factors into f(x) = 4x(4x-1).
This puts the zeros of the function at x = 0 and x = 1/4.