Given:
The function is:


To find:
The all of the zeros of f(x) algebraically.
Solution:
We have,
is means 8 is a zero of given function and (x-8) is a factor of given function.
The function is:

Spittle the middle terms in such a way so that we get (x-8) as a common factor.



Spittle the middle term of the quadratic expression, we get



For zeros,
.



Therefore, the all zeros of the given function are -5, 1 and 8.