please help ! anything counts

Answer:
I honestly don't know if this is right but if it looks familiar you are welcome to try it.
x=[tex]\frac{16-\sqrt{-4} }{2} = 8-i = 8.0000-1.0000i[/tex]
x=[tex]\frac{16+ \sqrt{-4} }{2} =8 + i= 8.0000 + 1.0000i[/tex]
I really hope this helps!!