The factoring method cannot be used on quadratic equations that are not factorable. Does this mean that they cannot be solved in the set of real numbers? For some quadratic equations, the answer is yes, but many can be solved by different methods. Mathematics generally allows for more than one way to solve a problem, and there are several methods for solving quadratic equations. Match the square root with its perfect square:

1. 1
√144
2. 6
√100
3. 12
√49
4. 10
√16
5. 3
√25
6. 13
√36
7. 11
√4
8. 4
√64
9. 8
√169
10. 5
√9
11. 9
√1
12. 7
√81
13. 2
√121