4x+25/x=9

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Solution for 4x+25/x=9 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

4*x+25/x = 9 // - 9

4*x+25/x-9 = 0

4*x^1+25*x^-1-9*x^0 = 0

(4*x^2-9*x^1+25*x^0)/(x^1) = 0 // * x^2

x^1*(4*x^2-9*x^1+25*x^0) = 0

x^1

4*x^2-9*x+25 = 0

4*x^2-9*x+25 = 0

DELTA = (-9)^2-(4*4*25)

DELTA = -319

DELTA < 0

x in { } 

x belongs to the empty set

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