document.write( "Question 351706: √(r-)-√(s)/√(r)+√(s)\r
\n" ); document.write( "\n" ); document.write( "How do I rationalize the denominator? Assuming that all the expressions under radicals represent positive numbers. \n" ); document.write( "

Algebra.Com's Answer #251309 by Jk22(389) $\"\"$ $\"About$

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We can multiply by √(r)-√(s)/√(r)-√(s)\r
\n" ); document.write( "\n" ); document.write( "this gives : (√(r)-√(s))^2/(r-s), for (a+b)(a-b)=a^2-b^2 \n" ); document.write( "

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