Ecuaciones de 2do grado

3x² +12x -36 = 0
x² +2x -48 = 0
3x² -12x -96 = 0
2x² -16x = 0
-2x² -6x +8 = 0
-2x² -12x -16 = 0
x² +11x +30 = 0
-2x² +8 = 0
x² -4 = 0
2x² +24x +64 = 0
2x² +12x -32 = 0