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0
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(mg4)-1(mg4)

 Jan 30, 2016
 #1
avatar+128731 
+5

(mg4)-1(m1g4)  =

 

(m-1g-4)(m1g4)  =

 

(m0g0)  =

 

(mg)0  =

 

1

 

 


cool cool cool

 Jan 30, 2016

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