x+5/x+7*10x/x-7

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Solution for x+5/x+7*10x/x-7 equation: 


D( x )

x = 0

x = 0

x = 0

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

x+5/x+(7*10*x)/x-7 = 0

1*x^1+5*x^-1+63*x^0 = 0

(1*x^2+63*x^1+5*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2+63*x^1+5*x^0) = 0

x^1

x^2+63*x+5 = 0

x^2+63*x+5 = 0

DELTA = 63^2-(1*4*5)

DELTA = 3949

DELTA > 0

x = (3949^(1/2)-63)/(1*2) or x = (-3949^(1/2)-63)/(1*2)

x = (3949^(1/2)-63)/2 or x = (-(3949^(1/2)+63))/2

x in { (-(3949^(1/2)+63))/2, (3949^(1/2)-63)/2} 

x in { (-(3949^(1/2)+63))/2, (3949^(1/2)-63)/2 }

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