How do you multiply #(-7-4i)(-6-6i)#?
1 Answer
Feb 9, 2018
Explanation:
#"expand the factors using FOIL"#
#color(orange)"Reminder "i^2=(sqrt(-1))^2=-1#
#rArr(-7-4i)(-6-6i)#
#=42+42i+24i+24i^2#
#=42+66i-24#
#=18+66ilarrcolor(blue)"in standard form"#
