document.write( "Question 1019520: (6/n^2) - (1/n) = -(1/3n)
\n" ); document.write( "I know the LCM is 3n^2 but I'm still confused. Thanks \n" ); document.write( "

Algebra.Com's Answer #635462 by robertb(5830) $\"\"$ $\"About$

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Consider the denominators present in every rational expression, namely $\"n%5E2\"$ , n, and 3n. To find the LCD, find the highest power of any distinct factors appearing, and then multiply them together.
\n" ); document.write( "One factor is the number 3, whose highest power is 1. (So $\"3%5E1\"$ , or 3, appears in the LCD). The factors n and $\"n%5E2\"$ also appear, both of them powers of the same base n. So choose $\"n%5E2\"$ , because it is the highest power of n appearing.
\n" ); document.write( "The LCD is then $\"3n%5E2\"$ . \n" ); document.write( "

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