Follow the process of completing the square to solve x2 - 10x + 8 = 0.

what is the value of the constant that will be isolated on the right side of the equation in step 3?

X^2 + 10x + 8 = 0
1.  move 8 to the right by subtracting 8 from both sides
x^2 + 10x = -8
2.  b/2  10/2 = 5
3.  5^2 = 25
4.  add 25 to both sides
x^2 + 10x + 25 = -8 + 25
5.  (x + 5)^2 = 17
6.  x + 5 = + - √17
7.  x = -5 + - √17

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)