document.write( "Question 186769: Which is a irrational number the square root of 5, the square root, of 9, the square root of -1, or the square root of 2 thirds \n" ); document.write( "
Algebra.Com's Answer #139985 by jim_thompson5910(35256)\"\" \"About 
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\"sqrt%285%29\" is irrational (since it CANNOT be written as a fraction of integers)\r
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\n" ); document.write( "\n" ); document.write( "\"sqrt%289%29=3\" which is rational since \"3=3%2F1\"\r
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\n" ); document.write( "\n" ); document.write( "\"sqrt%28-1%29=i\" which is complex (ie not real)\r
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\n" ); document.write( "\n" ); document.write( " is irrational as it can't be written as a fraction of 2 integers. \n" ); document.write( "
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