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http://prntscr.com/lh3wir

 Nov 11, 2018
 #1
avatar+99702 
+2

x^3 + 5x^2 - 9x - 45       factor by grouping

 

x^2 ( x + 5)  - 9(x + 5)

 

(x + 5) ( x^2 - 9)

 

(x + 5) ( x + 3) ( x - 3)

 

 

 

cool cool cool

 Nov 11, 2018

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