document.write( "Question 889116: (n+1)! = 12(n-1)! \n" ); document.write( "

Algebra.Com's Answer #537894 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28n%2B1%29%21+=+12%28n-1%29%21\"$
\n" ); document.write( " $\"%28n%2B1%29n%28n-1%29%21=12%28n-1%29%21\"$
\n" ); document.write( " $\"n%28n%2B1%29=12\"$
\n" ); document.write( " $\"n%5E2%2Bn-12=0\"$
\n" ); document.write( " $\"%28n%2B4%29%28n-3%29=0\"$
\n" ); document.write( "Only the positive solution works here.
\n" ); document.write( " $\"n-3=0\"$
\n" ); document.write( " $\"highlight%28n=3%29\"$
\n" ); document.write( " \n" ); document.write( "

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