document.write( "Question 44882: This is confusing me...can someone explain this to me?\r
\n" ); document.write( "\n" ); document.write( "FIND A VALUE FOR k SO THAT 9m^2 - kn^2 WILL HAVE THE FACTORS 3m + 7n AND 3m -7n
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Algebra.Com's Answer #29739 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
If the factors are \"%283m+%2B+7n%29\" and \"3m+-+7n%29\"
\n" ); document.write( "multiply out the factors to get the solution
\n" ); document.write( "\"%283m+%2B+7n%29%283m+-+7n%29+=+9m%5E2+-+49n%5E2\"
\n" ); document.write( "\"9m%5E2+-+kn%5E2+=+9m%5E2+-+49n%5E2\"
\n" ); document.write( "subtract \"9m%5E2\" from both sides
\n" ); document.write( "\"-+kn%5E2+=+-49n%5E2\"
\n" ); document.write( "divide both sides by \"-n%5E2\"
\n" ); document.write( "\"k+=+49\" answer
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