document.write( "Question 1134203: For what values of the variable does the following expression make sense:
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Algebra.Com's Answer #751503 by Theo(13342) $\"\"$ $\"About$

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a can be any value greater than or equal to 0.
\n" ); document.write( "this makes the value of 3 * sqrt(a) real.
\n" ); document.write( "if a is less than 0, then the value of 3 * sqrt(a) is not real.
\n" ); document.write( "it is imaginary.\r
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\n" ); document.write( "\n" ); document.write( "here's one reference dealing with imaginary numbers.\r
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\n" ); document.write( "\n" ); document.write( "https://www.mathsisfun.com/numbers/imaginary-numbers.html\r
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