The zeros of the polynomial are all the values of x for which the function f(x) equal zero
The zeros are:
x= -6
x + 6 = 0
x = 2
x - 2=0
x=5
x - 5 =0
x=4
x - 4 = 0
x = -8
x + 8 = 0
We can now go ahead and write trhe polynomial as a product of its factor
That is;
f(x) = (x+6)(x-2)(x-5)(x-5)(x+8)