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Help.

NotSoSmart  Nov 16, 2017
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 #1
avatar+86643 
+1

(-2i) (8i)  =

 

(-2 * 8 )  * ( i * i )  =

 

-16 * i^2   =

 

-16 * -1  =

 

16

 

 

cool cool cool

CPhill  Nov 16, 2017
edited by CPhill  Nov 16, 2017

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