Asked by Ariana
Why is (-5i) ( 6i) positive 30?
Thank you
Thank you
Answers
Answered by
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
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