2/x^2-2x

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Solution for 2/x^2-2x equation: 


D( x )

x^2 = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

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

2/(x^2)-(2*x) = 0

2/(x^2)-2*x = 0

2*x^-2-2*x^1 = 0

(2*x^0-2*x^3)/(x^2) = 0 // * x^4

x^2*(2*x^0-2*x^3) = 0

x^2

2-2*x^3 = 0

{ 1, -1, 2, -2 }

1

x = 1

2-2*x^3 = 0

1

x-1

-2*x^2-2*x-2

2-2*x^3

x-1

2*x^3-2*x^2

2-2*x^2

2*x^2-2*x

2-2*x

2*x-2

0

-2*x^2-2*x-2 = 0

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

DELTA = -12

DELTA < 0

x in { 1} 

x = 1

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