document.write( "Question 534873: Simplify the following expression; express in term og i.
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Algebra.Com's Answer #351681 by Earlsdon(6294)\"\" \"About 
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\"sqrt%28-4%29+=+sqrt%284%29%2Asqrt%28-1%29\"=\"2i\" or \"-2i\" \n" ); document.write( "
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