((5x-4)(5x-4))=1/(x)

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Solution for ((5x-4)(5x-4))=1/(x) equation:


D( x )

x = 0

x = 0

x = 0

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

(5*x-4)*(5*x-4) = 1/x // - 1/x

(5*x-4)*(5*x-4)-(1/x) = 0

(5*x-4)*(5*x-4)-x^-1 = 0

(5*x-4)^2-1/x = 0

(x*(5*x-4)^2)/x-1/x = 0

x*(5*x-4)^2-1 = 0

25*x^3-40*x^2+16*x-1 = 0

25*x^3-40*x^2+16*x-1 = 0

25*x^3-40*x^2+16*x-1 = 0

{ 1, -1 }

1

x = 1

25*x^3-40*x^2+16*x-1 = 0

1

x-1

25*x^2-15*x+1

25*x^3-40*x^2+16*x-1

x-1

25*x^2-25*x^3

16*x-15*x^2-1

15*x^2-15*x

x-1

1-x

0

25*x^2-15*x+1 = 0

DELTA = (-15)^2-(1*4*25)

DELTA = 125

DELTA > 0

x = (125^(1/2)+15)/(2*25) or x = (15-125^(1/2))/(2*25)

x = (5*5^(1/2)+15)/50 or x = (15-5*5^(1/2))/50

x in { (15-5*5^(1/2))/50, (5*5^(1/2)+15)/50, 1}

(x-((15-5*5^(1/2))/50))*(x-((5*5^(1/2)+15)/50))*(x-1) = 0

((x-((15-5*5^(1/2))/50))*(x-((5*5^(1/2)+15)/50))*(x-1))/x = 0

((x-((15-5*5^(1/2))/50))*(x-((5*5^(1/2)+15)/50))*(x-1))/x = 0 // * x

(x-((15-5*5^(1/2))/50))*(x-((5*5^(1/2)+15)/50))*(x-1) = 0

( x-((15-5*5^(1/2))/50) )

x-((15-5*5^(1/2))/50) = 0 // + (15-5*5^(1/2))/50

x = (15-5*5^(1/2))/50

( x-((5*5^(1/2)+15)/50) )

x-((5*5^(1/2)+15)/50) = 0 // + (5*5^(1/2)+15)/50

x = (5*5^(1/2)+15)/50

( x-1 )

x-1 = 0 // + 1

x = 1

x in { (15-5*5^(1/2))/50, (5*5^(1/2)+15)/50, 1 }

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