document.write( "Question 1159531: Write each expression without using the factorial symbol.\r
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Algebra.Com's Answer #782577 by ikleyn(52776) $\"\"$ $\"About$

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document.write( "(A)  (n+1)! = (n-1)!*n*(n+1).\r\n" );
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document.write( "     Therefore,   = n*(n+1).      ANSWER\r\n" );
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