document.write( "Question 82237: Which two expressions are equivalent?
\n" ); document.write( "√-49, -7, -√49 \r
\n" ); document.write( "\n" ); document.write( "By my calculations which are not always so good I came up with these two as equivalent √-49, -7.
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Algebra.Com's Answer #58942 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Sorreee!\r
\n" ); document.write( "\n" ); document.write( " $\"sqrt%28-49%29+=+7sqrt%28-1%29\"$ = 7i and this is not a real number.
\n" ); document.write( " $\"-sqrt%2849%29+=+-7\"$
\n" ); document.write( "So, $\"-sqrt%2849%29\"$ and $\"-7\"$ are equivalent. \n" ); document.write( "

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