+0  
 
0
152
1
avatar+534 

 

is the answer -0.6i?

 

 

 

im thinking for this one it could be -4i

 

 

 this could be -15 √6

 Sep 8, 2018
 #1
avatar+67 
+1

you are right with number 1 and 3 but the second one is just 4

 Sep 8, 2018

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