Hello,

use factorization:

Since there is only one real value for x:

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

EDIT: You asked forall possiblesolutions. You didn't mention a domain so maybe imaginary solutions are possible for you too:

. A product of 2 factors is zero if one factor is zero: