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The sums of which two pairs from the table will give you the same result? For example, A + B = C + D.

 

 Aug 5, 2020
 #1
avatar+28021 
+1

This is just a tedious exercise:

 

-4 + 9i     +   6 - 6i  ==  11-12i   +  (-9+15i)  

2 + 3i                     ==  2 + 3i

 Aug 5, 2020
 #2
avatar+169 
0

Honestly, this is just a bash.

test test test.

 Aug 6, 2020

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