Question

Let z₁​ and z₂​ be two roots of the equation z²+az+b=0, where z is complex. Furthermore, assume that the origin, z₁​, and z₂ form an equilateral triangle. Then,
a) a=−1,b=−1
b) a=1,b=1
c) a=0,b=1
d) a=−2,b=2