25x+4/x=20

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Solution for 25x+4/x=20 equation: 


D( x )

x = 0

x = 0

x = 0

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

25*x+4/x = 20 // - 20

25*x+4/x-20 = 0

25*x^1+4*x^-1-20*x^0 = 0

(25*x^2-20*x^1+4*x^0)/(x^1) = 0 // * x^2

x^1*(25*x^2-20*x^1+4*x^0) = 0

x^1

25*x^2-20*x+4 = 0

25*x^2-20*x+4 = 0

DELTA = (-20)^2-(4*4*25)

DELTA = 0

x = 20/(2*25)

x = 2/5 or x = 2/5

x in { 2/5, 2/5} 

x in { 2/5, 2/5 }

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