x^3-1/4x^2-2x-3=0

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Solution for x^3-1/4x^2-2x-3=0 equation: 


x in (-oo:+oo)

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

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

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

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

{ 1, -1, 2, -2, 3, -3, 4, -4, 6, -6, 12, -12 }

1

x = 1

4*x^3-x^2-8*x-12 = -17

1

-1

x = -1

4*x^3-x^2-8*x-12 = -9

-1

2

x = 2

4*x^3-x^2-8*x-12 = 0

2

x-2

4*x^2+7*x+6

4*x^3-x^2-8*x-12

x-2

8*x^2-4*x^3

7*x^2-8*x-12

14*x-7*x^2

6*x-12

12-6*x

0

4*x^2+7*x+6 = 0

DELTA = 7^2-(4*4*6)

DELTA = -47

DELTA < 0

x in { 2} 

x = 2

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