x^2+4x-32/x-8

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Solution for x^2+4x-32/x-8 equation:


D( x )

x = 0

x = 0

x = 0

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

x^2+4*x-(32/x)-8 = 0

x^2+4*x-32*x^-1-8 = 0

1*x^2+4*x^1-32*x^-1-8*x^0 = 0

(1*x^3+4*x^2-8*x^1-32*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^3+4*x^2-8*x^1-32*x^0) = 0

x^1

x^3+4*x^2-8*x-32 = 0

{ 1, -1, 2, -2, 4, -4, 8, -8, 16, -16, 32, -32 }

1

x = 1

x^3+4*x^2-8*x-32 = -35

1

-1

x = -1

x^3+4*x^2-8*x-32 = -21

-1

2

x = 2

x^3+4*x^2-8*x-32 = -24

2

-2

x = -2

x^3+4*x^2-8*x-32 = -8

-2

4

x = 4

x^3+4*x^2-8*x-32 = 64

4

-4

x = -4

x^3+4*x^2-8*x-32 = 0

-4

x+4

x^2-8

x^3+4*x^2-8*x-32

x+4

-x^3-4*x^2

-8*x-32

8*x+32

0

x^2-8 = 0

DELTA = 0^2-(-8*1*4)

DELTA = 32

DELTA > 0

x = (32^(1/2)+0)/(1*2) or x = (0-32^(1/2))/(1*2)

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

x in { -2*2^(1/2), 2*2^(1/2), -4}

x in { -2*2^(1/2), 2*2^(1/2), -4 }

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