document.write( "Question 1113462: -2 and +2 are equal, if yes how ?\r
\n" ); document.write( "\n" ); document.write( "we have tried this-
\n" ); document.write( "(-2)x(-2)= 2x2
\n" ); document.write( "=> (-2)^2=2^2
\n" ); document.write( "=> (-2)=2
\n" ); document.write( " Is it correct ?
\n" ); document.write( "

Algebra.Com's Answer #728503 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
-2 is not equal to 2.
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\n" ); document.write( "Squaring and then taking the square root can introduce extraneous \"solutions.\"
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