Question

Simplify (8 + 7i) + (2 − i)

Answer 1

remove the brackets and group them:
8+2+7i-i
and then solve, you can only add/subtract terms that have the same variable

Answer 2

So it would be 10+6i ?

Answer 3

mhm (:

Answer 4

Thanks! :)

Answer 5

wait are you talking about "\[i\]" as a variable or as \[\sqrt{-1}\]?