-9-9i/-7i

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Solution for -9-9i/-7i equation: 


i in (-oo:+oo)

-(((9*i)/(-7))*i)-9 = 0

(9/7)*i^2-9 = 0

9/7*i^2 = 9 // : 9/7

i^2 = 7

i^2 = 7 // ^ 1/2

abs(i) = 7^(1/2)

i = 7^(1/2) or i = -7^(1/2)

i in { 7^(1/2), -7^(1/2) }

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