document.write( "Question 775436: if a,b,c are three distinct real numbers in geometric progression and a+b+c=xb then prove that x is greater than3 or less than -1
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #472961 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
The three numbers are in geometric progression, sp
\n" ); document.write( "\"b%2Fa=r\"<-->\"a=b%2Fr\" and
\n" ); document.write( "\"c%2Fb=r\"<-->\"c=br\"
\n" ); document.write( "with \"r\"= common ratio of the progression.
\n" ); document.write( "Since a,b,c are three distinct numbers,
\n" ); document.write( "\"r%3C%3E1\" and \"r%3C%3E-1\"
\n" ); document.write( "
\n" ); document.write( "\"a%2Bb%2Bc=b%2Fr%2Bb%2Bbr=%28b%2Bbr%2Bbr%5E2%29%2Fr=b%281%2Br%2Br%5E2%29%2Fr\"
\n" ); document.write( "If \"a%2Bb%2Bc=xb\" \"xb=b%281%2Br%2Br%5E2%29%2Fr\" --> \"x=%281%2Br%2Br%5E2%29%2Fr\"
\n" ); document.write( "
\n" ); document.write( "If \"r%3C0\" and \"r%3C%3E-1\",
\n" ); document.write( "\"x%2B1=%281%2Br%2Br%5E2%29%2Fr%2B1=%281%2B2r%2Br%5E2%29%2Fr=%28r%2B1%29%5E2%2Fr%3C0\"
\n" ); document.write( "and \"x%2B1%3C0\" --> \"highlight%28x%3C-1%29\"
\n" ); document.write( "
\n" ); document.write( "If \"r%3E0\" and \"r%3C%3E1\",
\n" ); document.write( "\"x-3=%281%2Br%2Br%5E2%29%2Fr-3=%281-2r%2Br%5E2%29%2Fr=%28r-1%29%5E2%2Fr%3E0\"
\n" ); document.write( "and \"x-3%3E0\" --> \"highlight%28x%3E3%29\"
\n" ); document.write( "
\n" ); document.write( "
\n" );