Question 45552
a = 1,2,3,6
b = 1,2,3,4,6,12
+- a/b
+- 1, 2, 3, 6, 1/2, 3/2, 1/3, 2/3, 1/4, 6/4, 1/6, 1/12
Pos: 1 1
Neg: 2 0
(i): 0 2
There is definitly one positive root.
{{{ graph(600,600,-7,3,-20,20,12x^3 + 73x^2 + 5x - 6) }}}
(12x^2 + x - 1)(x + 6)
((12x^2 + 4x) + (-3x - 1))(x + 6)
(4x(3x + 1) - 1(3x + 1))(x + 6)
(4x - 1)(3x + 1)(x + 6)
Roots: -6, -1/3, 1/4