+0  
 
-1
211
1
avatar+4116 

Help 8

 Dec 7, 2018
 #1
avatar+107493 
+1

d =  sqrt [ ( -2 - 5)^2 + ( -4 - 7)^2 ]  = 

 

sqrt [ (-7)^2 + (-11)^2 ] =

 

sqrt [ 49 + 121 ] =

 

sqrt[ 170]  ≈  13.03

 

 

cool cool cool

 Dec 7, 2018

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