Find the two solutions of each equation (four numbers in total) and sort them from smallest to largest. The code is the sequence of the four digits, with no spaces.

As before: find the four solutions and sort them from smallest to largest. The code is their sequence, with no spaces.

Rearrange the equation into the form ax² + bx + c = 0, then find its two solutions.
Enter the code by writing the negative solution first (with a minus sign) and then the positive one, with no spaces. Example: if the solutions were −3 and 8, the code would be -38.