document.write( "Question 303733: if n is any negative number ,which of the following must be positive ?\r
\n" ); document.write( "\n" ); document.write( "a n/2 b 2n c n + 2 d n - 2 e 2 - n \r
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Algebra.Com's Answer #217624 by jim_thompson5910(35256) $\"\"$ $\"About$

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If n is a negative number, then $\"n%3C0\"$ . Now multiply both sides by -1 to get $\"-n%3E0\"$ (notice the sign change). Now simply add two to both sides to get $\"2-n%3E2\"$ . Since $\"2-n%3E2\"$ , this means that $\"2-n\"$ is definitely greater than zero. So $\"2-n\"$ is positive for all negative values of 'n'. \n" ); document.write( "

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