The roots are just the zero value of the formula. To find these, we factor:
(x - 2)(x - 2)
(x - 2)^2
to make this into a zero, we set x-2 = 0, then solve for x
x = 2
If x = 2, then the brackets = 0, and those are the roots
The roots are x = 2
Leave a comment if you couldn’t understand, and I’ll try to answer.