Respuesta :

If you have not studied this subject yet you might have mis-copied the Q. 
xy = 20 
x + y = -6 
x + 20/x + 6 = 0 
x^2 + 6x + 20 = 0 
quadratic formula 
Select one solution x = - 3 + sqrt(11)i 
y = - 6 - [- 3 + sqrt(11)i] = - 3 - sqrt(11)i

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