(7-4i)/(2+5i)

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Solution for (7-4i)/(2+5i) equation: 


D( i )

5*i+2 = 0

5*i+2 = 0

5*i+2 = 0

5*i+2 = 0 // - 2

5*i = -2 // : 5

i = -2/5

i in (-oo:-2/5) U (-2/5:+oo)

(7-(4*i))/(5*i+2) = 0

(7-4*i)/(5*i+2) = 0

7-4*i = 0 // - 7

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

i = -7/(-4)

i = 7/4

i = 7/4

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