Answer:
n_1 = 8
n_2 = -2
Step-by-step explanation:
D = b^2 - 4ac (where f(x) = ax^2 + bx + c)
D = -6^2 - 4*1*-16
D = 36 + 64 = 100
n_1,n_2 = (-b +-sqrt(D))/(2a)
n_1,n_2 = (-(-6) +-sqrt(100))/(2*1)
n_1,n_2 = (6 +- 10)/2
n_1 = (6 + 10)/2 -> 16/2 = 8
n_2 = (6 - 10)/2 -> -4/2 = -2
