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-1
713
1
avatar+54 

What about this one

mn - 4m - 5n + 20

 Apr 7, 2017
 #1
avatar+128474 
+2

mn - 4m - 5n + 20

 

m(n - 4)  -   5(n - 4)   =

 

(n - 4) (m - 5)

 

 

cool cool cool

 Apr 7, 2017

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