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Factorise 15-5a

 

simplify:

3 x k x k - 3 x k 

 

5k(2) - 2k + 2k(2) - 5k 

 

(3+k)(3+2k) 

thanks

 Feb 5, 2016
 #1
avatar+8581 
+5

You've answered your OWN question???

 Feb 5, 2016
 #2
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0

15 - 15a   =  15 (1 - a)

3 x k x k - 3 x k  =    3K^2 - 3k

 

(3+k)(3+2k) =  9 + 6k + 3k + 2k^2 using distributive property

= 2k^2 +9k +9

 Feb 5, 2016

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