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

7.5x3 + 45x2 - 300x = 0
 x1 = 0 ,   x2 = -10 ,   x3 = 4		-3.5x3 + 35x2 - 73.5x = 0
 x1 = 0 ,   x2 = 3 ,   x3 = 7
3x3 - 12x = 0
 x1 = 0 ,   x2 = -2 ,   x3 = 2		10x3 - 60x2 - 160x = 0
 x1 = 0 ,   x2 = -2 ,   x3 = 8
9x3 - 99x2 + 216x = 0
 x1 = 0 ,   x2 = 3 ,   x3 = 8		5.5x3 - 11x2 - 192.5x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = 7
-9x3 - 63x2 + 72x = 0
 x1 = 0 ,   x2 = -8 ,   x3 = 1		-8.5x3 - 68x2 - 136x = 0
 x1 = 0 ,   x2 = -4 ,   x3 = -4
-2x3 + 22x2 - 60x = 0
 x1 = 0 ,   x2 = 5 ,   x3 = 6		-10x3 + 10x2 + 20x = 0
 x1 = 0 ,   x2 = -1 ,   x3 = 2
x3 + x2 - 20x = 0
 x1 = 0 ,   x2 = -5 ,   x3 = 4		4.5x3 - 27x2 = 0
 x1 = 0 ,   x2 = 0 ,   x3 = 6
8x3 - 64x2 - 160x = 0
 x1 = 0 ,   x2 = -2 ,   x3 = 10		6.5x3 - 32.5x2 + 39x = 0
 x1 = 0 ,   x2 = 2 ,   x3 = 3
0.5x3 - 5x2 + 12.5x = 0
 x1 = 0 ,   x2 = 5 ,   x3 = 5		9.5x3 - 38x2 + 38x = 0
 x1 = 0 ,   x2 = 2 ,   x3 = 2
2x3 - 26x2 + 60x = 0
 x1 = 0 ,   x2 = 3 ,   x3 = 10		-4.5x3 + 40.5x2 + 45x = 0
 x1 = 0 ,   x2 = -1 ,   x3 = 10
5x3 - 65x2 + 150x = 0
 x1 = 0 ,   x2 = 3 ,   x3 = 10		-5x3 + 45x2 - 100x = 0
 x1 = 0 ,   x2 = 4 ,   x3 = 5