document.write( "Question 376532: Simplify the expression (n + 9)(n - 9)\r
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Algebra.Com's Answer #267874 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "Simplifying the expression 
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document.write( "(n + 9)(n - 9)
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document.write( "n^2 - 81 Note:SUM of the inner product(9n) and the outer product(-9n) = 0 \n" );
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