Question 234838
First you factor the problem

(x^2 - 25)(x^2 - 4)  [Check using FOIL]

Then to find the zeros you do: & Solve
x^2 - 25 = 0
x^2 = 25
x = 5
x^2 - 4 = 0
x^2 = 4
x = 2

Solution:

x = 5 OR 2