I need help solving the trinomial (x squared minus four x plus seventeen equals twentynine). It has to be in 3 different methods and I have to show work but I don't know how to do it. Please help.

x^2 - 4x + 17 = 29

x^2 - 4x - 12 = 0

1. by factoring:
(x-6)(x+2) = 0
x = 6 or x = -2

2. by completing the square:

x^2 - 4x + ___ = 12 + ____
x^2 - 4x + 4 = 12 + 4
(x-2)^2 = 16
x-2 = ± 4
x = 2 ± 4
= 6 or -2

3. by formula
x = (4 ± √(16-4(1)(-12))/2
= (4 ± √64)/2
= (4 ± 8)/2
= 6 or -2