Question

If ∣∣z1−3z23−z1z¯2∣∣=1|z1−3z23−z1z¯2|=1, where z1,z2∈cz1,z2∈c, and |z2|≠1|z2|≠1, then |z1|=|z1|= _____.

Answer 1

I dont know the answer of this question