SOLUTION: i know (-6i) (-6i) is -36 but i don't know why. i can't seem to find out what i means.. negateve times negative , i thought was positive
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Question 144492: i know (-6i) (-6i) is -36 but i don't know why. i can't seem to find out what i means.. negateve times negative , i thought was positive
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression
Group like terms
Multiply -6 and -6 to get 36
Multiply i and i to get
Replace with -1. Remember,
Multiply
So
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