How do you simplify #(3- 4i ) + ( - 1+ 2i ) ( 11- i )#?
1 Answer
Nov 14, 2017
# (3- 4i ) + ( - 1+ 2i ) ( 11- i ) = -6+18i #
Explanation:
We have:
# (3- 4i ) + ( - 1+ 2i ) ( 11- i ) #
# " " = 3- 4i + ( - 1)( 11- i ) + (2i ) ( 11- i ) #
# " " = 3- 4i -11+ i + 22i- 2i^2 #
# " " = 3- 4i -11+i + 22i+2 #
# " " = -6+18i #
