SOLUTION: Perform the indicated operation -Imaginary numbers 1). (9-5i) + (4+7i) 2). (1+3i) - (2+ 8i) 3). (11i)(5i) 4). (12-5i)(2+3i)

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Perform the indicated operation -Imaginary numbers 1). (9-5i) + (4+7i) 2). (1+3i) - (2+ 8i) 3). (11i)(5i) 4). (12-5i)(2+3i)      Log On


   

Question 315735: Perform the indicated operation -Imaginary numbers
1). (9-5i) + (4+7i)
2). (1+3i) - (2+ 8i)
3). (11i)(5i)
4). (12-5i)(2+3i)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Only post one problem at a time please.

1) %289-5i%29+%2B+%284%2B7i%29+=%289%2B4%29%2B%28-5i%2B7i%29=13%2B2i