How do you add #-( 3.5i + 2.3) + ( 8.5+ 5.7i )#?

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Answer 1 · 2018-05-23T19:32:11

#2.2i+6.2#

Don't be daunted by the imaginary unit, #i#. Since we aren't multiplying it, for the most part we can treat it like a variable.

First, let's distribute the negative to both terms in the parenthesis to get

#-3.5i-2.3+8.5+5.7i#

Next, we combine like terms. The #i# terms will go with each other, and the constants will go with the constants. Doing this, we get

#2.2i+6.2#

as our final answer.

Hope this helps!