Answer:
x = 3,-5 is correct.
Explanation:
The Zero Product Property:
The Zero Product Property simply tells that if a*b=0, it implies that either a=0 or b=0 (or the both of them must be equal to zero). The product of the factors is zero if and only if the one or more of factors is zero. This is particularly useful for solving the quadratic equations .
In the given question the quadratic equation is (x-3)(x+5)=0
from the Zero Product Property, it is clear that x-3 =0 or x =3
x+5 =0 or x=-5
Therefor x = 3,-5 Hence option 3 is correct.