Question
Why is (-5i) ( 6i) positive 30?
Thank you
Thank you
Answers
Reiny
(-5i)(6i)
= -30 i^2 , now recall that i^2 = -1
= -30(-1)
= 30
= -30 i^2 , now recall that i^2 = -1
= -30(-1)
= 30