This activity could be used as a review of three ways to solve quadratic equations: by factoring, by completing the square, and by quadratic formula.
It is designed for 3 people to work on - each person in the group represents a partner A through C. Throughout the activity each group member will solve 9 quadratic equations, 3 with factoring, 3 with completing the square, and 3 with the quadratic formula.
#1-9 are the same problem for each group member so this activity is self checking as all 3 group members should get the same solution.
You could also use this for just a partnership or individual assignment as well. Print the 4 page document 2 sided and cut out each half sheet for each partner. They will use the answer key to keep track of all group member's solutions.