document.write( "Question 935200: if x plus y = a and xy = b, then the value of 1/x to the power of 3 plus 1/y to the power of 3 is equal to ? \n" ); document.write( "
Algebra.Com's Answer #568379 by MathLover1(20850)\"\" \"About 
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if \"x+%2By+=+a\" and \"xy+=+b\", then \r
\n" ); document.write( "\n" ); document.write( "\"x+=+a-y\"and \"y+=+b%2Fx\"\r
\n" ); document.write( "\n" ); document.write( "the value of \"1%2Fx%5E3+%2B+1%2Fy%5E3\"\r
\n" ); document.write( "\n" ); document.write( "= \"1%2F%28a-y%29%5E3+%2B+1%2F%28b%2Fx%29%5E3\"\r
\n" ); document.write( "\n" ); document.write( "=\"1%2F%28a-y%29%5E3+%2B+x%5E3%2Fb%5E3\"\r
\n" ); document.write( "\n" ); document.write( "=\"%28b%5E3+%2B+x%5E3%28a-y%29%5E3%29%2F%28%28a-y%29%5E3b%5E3%29\"\r
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