Consider the equation .
First, you can use the substitution , then and equation becomes . This equation is quadratic, so
.
Then you can factor this equation:
.
Use the made substitution again:
.
You have in each brackets the expression like that is equal to . Thus,
and the equation is
.
Here and you can sheck whether quadratic trinomials have real roots:
1. .
2. .
This means that quadratic trinomials don't have real roots.
Answer:
If you need complex roots, then
.