Question

find 0 of the polynomial p(x) equal (x minus 2 )minus (xplus 2

Answer 1

hey here is your ans
x-2=0
x=+2
x+2=0
x=-2

Answer 2

p(x)=(x-2)(x+2)

since solving this will give a quadratic expression, it will have two zeros. 
to find out its zero, first equate this polynomial to zero

(x-2)(x+2)=0

now, for this polynomial to be zero, either of the expressions has to be equal to zero.
i.e.

x-2=0
x+2=0

now solving the above mentioned two equations, we get

x=2
x=-2


this is the answer!!