Question: Let z = a5a - 36+ (a + 6a+ 8)i. What is the sum of all real numbers a such that z is a

Let z = a5a - 36+ (a + 6a+ 8)i. What is

Let z = a5a - 36+ (a + 6a+ 8)i. What is the sum of all real numbers a such that z is a negative real number?

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