How do you simplify #(-6-8i)(-3+8i)#?
2 Answers
Jun 6, 2017
Explanation:
You can just multiply everything out as in regular brackets, remembering that
So the expansion of
Jun 6, 2017
Explanation:
#"expand the brackets using FOIL"#
#rArr(-6-8i)(-3+8i)#
#=18-48i+24i-64i^2larr i^2=-1#
#=18-24i+64#
#=82-24i#