web2.0calc
 
+0  
 

 Factor

0
533
2
avatar

r^2+4

 Jul 23, 2016

2+0 Answers

 #1
avatar+118608 
0

This cannot be factorised

 Jul 24, 2016
 #2
avatar+9589 
0

\((r+2i)(r-2i)\)

.
 Jul 24, 2016

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