document.write( "Question 42605This question is from textbook
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document.write( ": I am lost on this problem...\r
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document.write( "radical -50 times radical -2 \n" );
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Algebra.Com's Answer #27718 by AnlytcPhil(1810) You can put this solution on YOUR website! I am lost on this problem... \r\n" ); document.write( "radical -50 times radical -2\r\n" ); document.write( " ___ __\r\n" ); document.write( "Ö-50 Ö-2\r\n" ); document.write( "\r\n" ); document.write( "Don't fall for the trap of always multiplying under radicals first.\r\n" ); document.write( "Don't do that! Negative numbers under square roots must be taken\r\n" ); document.write( "out of the radical before multiplying under them:\r\n" ); document.write( " ___ __ __ _ __ _ ___ \r\n" ); document.write( "Ö-50 Ö-2 = (iÖ50)(iÖ2) = i² Ö50 Ö2 = (-1)Ö100 = (-1)(10) = -10 \r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "If you multiply under the radical before taking negative signs\r\n" ); document.write( "out of square root radicals as i's on the outside, you will get\r\n" ); document.write( "the wrong answer.\r\n" ); document.write( "\r\n" ); document.write( "Edwin\r\n" ); document.write( "AnlytcPhil@aol.com\n" ); document.write( " |