First, factor out the x² term: x²(121x² - 36) = 0
Now, factor the remaining term as the difference of two squares:
x²(11x - 6)(11x + 6) = 0
Set each of the factors equal to 0: x² = 0 11x - 6 = 0 11x + 6 = 0
Finally, solve each of these reduced equations.