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)

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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)   (Show Source): You can put this solution on YOUR website!
Only post one problem at a time please.

1)

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