can -2 be divided by 0???
No.
Reason: Division works because it can be checked by doing multiplication:
For instance 6 ÷ 2 = 3, because 3 x 2 = 6.
To have -2 ÷ 0 = some number means that some number x 0 = 2;
but there is no number that multiplied by 0 will give you 2.