document.write( "Question 108443: Simplify into one rational expression
\n" ); document.write( "x^-1 - y^-2 \n" ); document.write( "
Algebra.Com's Answer #79110 by chitra(359)\"\" \"About 
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The given expression is:\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E-1+-+y%5E-2\"\r
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\n" ); document.write( "\n" ); document.write( "this can be written as: \r
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\n" ); document.write( "\n" ); document.write( "\"%281%2Fx%29+-+%281%2Fy%5E2%29\" \r
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\n" ); document.write( "\n" ); document.write( "Taking LCM, we get: \r
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\n" ); document.write( "\n" ); document.write( "\"%28y%5E2+-+x%29%2F%28xy%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "thus the simplied rational expression.\r
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