1.
Let ∣z1−(8−2i)∣≤1|z_1 - (8 - 2i)| \leq 1 and ∣z2−(2+6i)∣≤2|z_2 - (2 + 6i)| \leq 2, z1,z2∈Cz_1, z_2 \in \mathbb{C}. Then the minimum value of ∣z1−z2∣|z_1 - z_2| is: