Question

3 . Log² x + 5 . Log x - 2 ≤ 0 3 3

Answer 1

It's not always easy to type in mathematical symbols, but you may need to try again here.  It is unlikely that your problem actually states
       2
Log    x.   Perhaps you meant     Log    x.
                                                           2

Double-check to ensure that you have entered this problem correctly.  Also, please include the instructions for this problem.  Explain what that "3 3" means.