document.write( "Question 17162: I need help with subtracting radicals PLEASE!!!!!!
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document.write( "The problem is 5sqrt72-3sqrt48-4sqrt128= \n" );
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Algebra.Com's Answer #8318 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! 5sqrt72-3sqrt48-4sqrt128=?...the procedure is to factorise the radicals and take as much as possible out side the radical and simplify as per the classification \n" ); document.write( "for ex...sqrt72=sqrt2*2*2*3*3..there are three 2's and two 3's .so we can take two each of them out side the radical of square root,leaving only one 2 in the radical... \n" ); document.write( "sqrt72=sqrt2*2*2*3*3=2*3sqrt2=6sqrt2...similarly \n" ); document.write( "sqrt48=sqrt2*2*2*2*3=2*2sqrt3=4sqrt3 \n" ); document.write( "sqrt128=sqrt2*2*2*2*2*2*2=2*2*2sqrt2=8sqrt2.. \n" ); document.write( "now you should know that in their simplest form like sqrt2,sqrt3,sqrt5...etc can not be simplified any further and can be added or subtracted within their category only.. \n" ); document.write( "so we have now 5sqrt72-3sqrt48-4sqrt128=5*6sqrt2-3*4sqrt3-4*8sqrt2=sqrt2(30-32)-12sqrt3=-2sqrt2-12sqrt3...answer \n" ); document.write( " |