3/x-1*(5x-5)

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Solution for 3/x-1*(5x-5) equation: 


D( x )

x = 0

x = 0

x = 0

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

3/x-(1*(5*x-5)) = 0

3/x-(5*x)+5 = 0

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

(5*x^1-5*x^2+3*x^0)/(x^1) = 0 // * x^2

x^1*(5*x^1-5*x^2+3*x^0) = 0

x^1

5*x-5*x^2+3 = 0

5*x-5*x^2+3 = 0

DELTA = 5^2-(-5*3*4)

DELTA = 85

DELTA > 0

x = (85^(1/2)-5)/(-5*2) or x = (-85^(1/2)-5)/(-5*2)

x = (85^(1/2)-5)/(-10) or x = (85^(1/2)+5)/10

x in { (85^(1/2)-5)/(-10), (85^(1/2)+5)/10} 

x in { (85^(1/2)-5)/(-10), (85^(1/2)+5)/10 }

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