Löse die folgenden kubischen Gleichungen ax3 + bx2 + cx = 0

4x3 - 4x2 - 120x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = 6		1.5x3 + 3x2 - 12x = 0
 x1 = 0 ,   x2 = -4 ,   x3 = 2
1.5x3 - 15x2 = 0
 x1 = 0 ,   x2 = 0 ,   x3 = 10		2.5x3 - 2.5x2 - 105x = 0
 x1 = 0 ,   x2 = -6 ,   x3 = 7
7x3 + 84x2 + 189x = 0
 x1 = 0 ,   x2 = -9 ,   x3 = -3		-4x3 - 4x2 + 120x = 0
 x1 = 0 ,   x2 = -6 ,   x3 = 5
2x3 - 30x2 + 108x = 0
 x1 = 0 ,   x2 = 6 ,   x3 = 9		-9x3 + 225x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = 5
-9x3 + 27x2 + 486x = 0
 x1 = 0 ,   x2 = -6 ,   x3 = 9		-4.5x3 - 4.5x2 + 189x = 0
 x1 = 0 ,   x2 = -7 ,   x3 = 6
2.5x3 + 7.5x2 - 135x = 0
 x1 = 0 ,   x2 = -9 ,   x3 = 6		-4x3 + 20x2 = 0
 x1 = 0 ,   x2 = 0 ,   x3 = 5
7x3 + 70x2 + 175x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = -5		6x3 - 66x2 + 60x = 0
 x1 = 0 ,   x2 = 1 ,   x3 = 10
2x3 + 4x2 - 30x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = 3		4.5x3 - 112.5x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = 5
-7x3 + 98x2 - 315x = 0
 x1 = 0 ,   x2 = 5 ,   x3 = 9		x3 + x2 - 56x = 0
 x1 = 0 ,   x2 = -8 ,   x3 = 7
10x3 - 120x2 + 200x = 0
 x1 = 0 ,   x2 = 2 ,   x3 = 10		10x3 + 70x2 + 100x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = -2