Question: 7. Countability (15 points) Complex numbers can be written as a bi where a, b are real numbers and i is the square root of

7. Countability (15 points) Complex numbers can be written as a

7. Countability (15 points) Complex numbers can be written as a bi where a, b are real numbers and i is the square root of -1. Show that set R of complex numbers given by R fa bi : a, b are rational) is countable

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