Answer
$7 + 7i$
Work Step by Step
First, we want to get rid of the parentheses by using the distributive property, but we need to pay attention to the signs:
$3 + 4i + 4 + 3i$
Group like terms:
$(3 + 4) + (4i + 3i)$
Combine like terms:
$(7) + (7i)$
Remove the parentheses:
$7 + 7i$
