


Second Example: One Repeated SolutionExamine the following problem. We are using decimal numbers in place of fractions here, but this is a matter of choice. Using decimal numbers will not require us to use the Quadratic Formula any differently. In this case, the equation is already in the correct format. Using "ax^{2} + bx + c = 0," we must now determine a, b, and c. Now we can substitute into the Quadratic Formula: Now we begin simplifying by replacing (22)^{2} with 484. Simplifying multiplication, we see that 4(10)(12.1) is equal to 484, and 2(10) is equal to 20. Notice that we cannot create two different subproblems because +0 and 0 are the same value. Therefore, we simply drop the ??0 from the problem. Without the two subproblems, we will only have one solution. Proceed to the next page for a note about imaginary and complex number solutions. 

