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Let $$|z_{1}-8-2i| \leq 1$$ and $$|z_{2}-2+6i| \leq 2,z_{1},z_{2} \in C$$. Then the minimum value of $$|z_{1}-z_{2}|$$ is :
Here, $$z_1$$ lies in or on the circle centered at $$(8,2)$$ with radius 1, and $$z_2$$ lies in or on the circle centered at $$(2,-6)$$ with radius 2.
The distance between these centers is
$$d = \sqrt{(8-2)^2 + (2-(-6))^2} = \sqrt{36 + 64} = \sqrt{100} = 10.$$
Therefore, the minimum possible distance between any point in the first circle and any point in the second circle is
$$d - 1 - 2 = 10 - 1 - 2 = 7.$$
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