+0  
 
+3
73
1
avatar+702 

http://prntscr.com/kz1mmw

critical  Sep 26, 2018
 #1
avatar+92505 
+2

x^3 + 4x^2 -9x - 36     we can factor this ( by grouping ) as

 

x^2 ( x + 4)  - 9(x + 4)   =

 

(x + 4) ( x^2 - 9) =

 

(x + 4) ( x + 3) ( x - 3)

 

So...the second, third and fifth answers are  correct...!!!!!

 

 

cool cool cool

CPhill  Sep 26, 2018

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