document.write( "Question 468720: Simplify the following radical. $\"sqrt%28-640%29\"$ \n" ); document.write( "

Algebra.Com's Answer #321586 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( " $\"sqrt%28-640%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"sqrt%28%28-1%29640%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"i%2Asqrt%2864%2A10%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"i%2Asqrt%288%5E2%2A10%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"8i%2Asqrt%2810%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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