Algebra 2 (1st Edition)

$8+7i$
$(3+2i)+(5-i)+6i\qquad$ ...remove the parentheses using the distributive property. $=3+2i+5-i+6i\qquad$ ...group like terms. $=3+5+2i-i+6i\qquad$ ...simplify $=8+7i$