document.write( "Question 945597: Solve the equation $\"%28matrix%282%2C1%2Cn%2C2%29%29\"$ $\"%22%22-%22%22\"$ $\"%28matrix%282%2C1%2Cn%2C1%29%29\"$ $\"%22%22=%22%22\"$ $\"20\"$
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Algebra.Com's Answer #576871 by Edwin McCravy(20055) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Replace n! by n*(n-1)*(n-2)! in the first fraction and by n*(n-1)! in the second \r\n" );
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document.write( "Multiply through by 2 to clear of fractions:\r\n" );
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document.write( "n-8 = 0;  n+5 = 0\r\n" );
document.write( "  n = 8     n = -5\r\n" );
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document.write( "Answer:  n = 8\r\n" );
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document.write( "Edwin

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