How do you simplify #-5i(10+2i)#?
1 Answer
Dec 24, 2016
Explanation:
distribute the bracket.
#rArr-5i(10+2i)=-50i-10i^2#
#color(orange)"Reminder : " i^2=(sqrt(-1))^2=-1#
#rArr-50i-10i^2=-50i+10=10-50i#
