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Distance of complex numbers

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Find the distance d between z, start subscript, 1, end subscript, equals, left parenthesis, 12, plus, 3, i, right parenthesis and z, start subscript, 2, end subscript, equals, left parenthesis, 10, minus, 5, i, right parenthesis.
Express your answer in exact terms and simplify, if needed.
d, equals