(2x^3+4x-6)/(x+3)

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Solution for (2x^3+4x-6)/(x+3) equation: 


D( x )

x+3 = 0

x+3 = 0

x+3 = 0

x+3 = 0 // - 3

x = -3

x in (-oo:-3) U (-3:+oo)

(2*x^3+4*x-6)/(x+3) = 0

2*x^3+4*x-6 = 0

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

x^3+2*x-3 = 0

{ 1, -1, 3, -3 }

1

x = 1

x^3+2*x-3 = 0

1

x-1

x^2+x+3

x^3+2*x-3

x-1

x^2-x^3

x^2+2*x-3

x-x^2

3*x-3

3-3*x

0

x^2+x+3 = 0

DELTA = 1^2-(1*3*4)

DELTA = -11

DELTA < 0

x in { 1} 

2*(x-1) = 0

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

x-1 = 0 // + 1

x = 1

x = 1

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