+0  
 
0
453
2
avatar+390 

this is my answer

 Mar 5, 2018
 #1
avatar+587 
0

It says waiting for moderation. 

 Mar 5, 2018
 #2
avatar+8866 
+2

     -4y2 + 3xy - 12y + 9x

=

     y(-4y + 3x) + 3(-4y + 3x)

=

     (-4y + 3x)(y + 3)

=

     (3x - 4y)(y + 3)

 Mar 5, 2018

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