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(1/3)*x^3-(4*x)-(11/3) = 0
(1/3)*x^3-4*x-11/3 = 0
(1/3)*x^3-4*x-11/3 = 0
(1/3)*x^3-4*x-11/3 = 0 // * 0
{ 1, -1, 11, -11 }
1
x = 1
x^3-12*x-11 = -22
1
-1
x = -1
x^3-12*x-11 = 0
-1
x+1
x^2-x-11
x^3-12*x-11
x+1
-x^3-x^2
-x^2-12*x-11
x^2+x
-11*x-11
11*x+11
0
x^2-x-11 = 0
DELTA = (-1)^2-(-11*1*4)
DELTA = 45
DELTA > 0
x = (45^(1/2)+1)/(1*2) or x = (1-45^(1/2))/(1*2)
x = (3*5^(1/2)+1)/2 or x = (1-3*5^(1/2))/2
x in { (1-3*5^(1/2))/2, (3*5^(1/2)+1)/2, -1}
x in { (1-3*5^(1/2))/2, (3*5^(1/2)+1)/2, -1 }
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