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#20,21 Help.

 Feb 12, 2018
 #1
avatar+557 
+2

question 21:

 

smileysmileysmiley

 Feb 12, 2018
edited by lynx7  Feb 12, 2018
 #2
avatar+557 
+3

question 20:

 

√3*√3=√9

√9=3

 

winkwinkwink

 Feb 12, 2018

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