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How do I factor this

mr + ns - nr - ms

needmathhelp  Apr 7, 2017
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 #1
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mr + ns - nr - ms

 

Let's rearrange this as

 

mr - nr + ns - ms   =

 

mr - nr  - ms + ns  =

 

r (m - n)  - s(m - n) =

 

(m - n) (r - s)

 

 

cool cool cool

CPhill  Apr 7, 2017

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