List the solutions to the quadratic function below.

 `f(x)= x^2-10 x+28` 

`x=`   

** Separate your solution values with a comma. For example, x=2,3  or x= `(6+sqrt(3))/2, (6-sqrt(3))/2` ** Use MathQuill if you need to **

Box 1: Enter your answer as a list of complex numbers in a+bi form separated with commas. Example: 2+5i,-3-4i
Enter each value as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity