x^2-16/x+4=0

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Solution for x^2-16/x+4=0 equation: 


D( x )

x = 0

x = 0

x = 0

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

x^2-(16/x)+4 = 0

x^2-16*x^-1+4 = 0

1*x^2-16*x^-1+4*x^0 = 0

(1*x^3+4*x^1-16*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^3+4*x^1-16*x^0) = 0

x^1

x^3+4*x-16 = 0

{ 1, -1, 2, -2, 4, -4, 8, -8, 16, -16 }

1

x = 1

x^3+4*x-16 = -11

1

-1

x = -1

x^3+4*x-16 = -21

-1

2

x = 2

x^3+4*x-16 = 0

2

x-2

x^2+2*x+8

x^3+4*x-16

x-2

2*x^2-x^3

2*x^2+4*x-16

4*x-2*x^2

8*x-16

16-8*x

0

x^2+2*x+8 = 0

DELTA = 2^2-(1*4*8)

DELTA = -28

DELTA < 0

x in { 2} 

x = 2

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