document.write( "Question 1064767: If xy = a, xz = b, and yz = c, and none of these quantities is 0, then what is the x^2 - y^2 + z^2? \n" ); document.write( "

Algebra.Com's Answer #679868 by Edwin McCravy(20056) $\"\"$ $\"About$

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If xy = a, xz = b, and yz = c, and none of these quantities is 0, then what is the x^2 - y^2 + z^2?
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document.write( "(1)  \r\n" );
document.write( "(2)  \r\n" );
document.write( "(3)  \r\n" );
document.write( "(4)     <--mult. equals by equals, (1) and (2)\r\n" );
document.write( "(5)     <--mult. equals by equals, (1) and (3)\r\n" );
document.write( "(6)     <--mult. equals by equals, (2) and (3)\r\n" );
document.write( "(7)     <--div. both sides of (4) by yz\r\n" );
document.write( "(8)     <--div. both sides of (5) by xz\r\n" );
document.write( "(9)     <--div. both sides of (6) by xy\r\n" );
document.write( "(10) \r\n" );
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document.write( "Edwin

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