document.write( "Question 908426: I am confused on \"Factor by Grouping\". The problem I am working on is this :
\n" ); document.write( "mn + 5n^2 - 4m - 20n Any help provided with the answer so I can have a correct example to go through the rest of my homework with would be outstanding, thank you !
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Algebra.Com's Answer #551022 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
It helps if you can see the relationship between 4, 5 and 20\r
\n" ); document.write( "\n" ); document.write( "mn - 4m+5n^2 -20n
\n" ); document.write( "m*(n-4)+5n*(n-4)
\n" ); document.write( "(m+5n)*(n-4)\r
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