Question 190982
Select any imaginary number (of the form "a + bi," where a and b are non-zero real numbers), and another number such that the sum, difference, product, or quotient of the two numbers is a real number
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Product: (2+3i)(2-3i) = 4 +6i - 6i -9i^2 
= 4+9
= 13
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Cheers,
Stan H.