Answers

2014-03-01T21:07:04+05:30
= (-9-9i) (3+10i)
=-9-9ix3+10i
=0ix13i
= i
0
2014-03-02T10:29:24+05:30
(-9-9i)(3+10i)
-27-90i-27i+90                      (i*i=-1)
so
63-117i

0