The roots of the quadratic equation _______ are x = 2 ± i.
x^2-4x-5=0
x^2+4x+5=0
x^2-4x+5=0
x^2+4x-5=0
x^2-4x-5=0
x^2+4x+5=0
x^2-4x+5=0
x^2+4x-5=0