4-7i/2i

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Solution for 4-7i/2i equation: 


i in (-oo:+oo)

4-(((7*i)/2)*i) = 0

(-7/2)*i^2+4 = 0

-7/2*i^2 = -4 // : -7/2

i^2 = 8/7

i^2 = 8/7 // ^ 1/2

abs(i) = (8/7)^(1/2)

i = (8/7)^(1/2) or i = -(8/7)^(1/2)

i in { (8/7)^(1/2), -(8/7)^(1/2) }

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