document.write( "Question 1189826: The first term of a G.P is x and 3rd term is y. Find an expression
\n" ); document.write( "for the common ratio in terms of x and y. the 1st and 3rd term of
\n" ); document.write( "a G.P are 8 and 18 respectively and the common ratio is positive,
\n" ); document.write( "find the common ratio. \n" ); document.write( "

Algebra.Com's Answer #821313 by Edwin McCravy(20056) $\"\"$ $\"About$

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the first term of a G.P is x and 3rd term is y.
\n" ); document.write( "Find an expression for the common ratio in terms ]
\n" ); document.write( "of x and y.\r
\n" ); document.write( "\n" ); document.write( "So the sequence is like this\r
\n" ); document.write( "\n" ); document.write( "__x__, ___, __y__,...\r
\n" ); document.write( "\n" ); document.write( " $\"r=matrix%281%2C2%2C2nd%2Cterm%29%2Fmatrix%281%2C2%2C1st%2Cterm%29\"$ $\"%22%22=%22%22\"$ $\"r=matrix%281%2C2%2C3rd%2Cterm%29%2Fmatrix%281%2C2%2C2nd%2Cterm%29\"$ $\"%22%22=%22%22\"$ $\"x%2Ar\"$ $\"%22%22=%22%22\"$ $\"y%2Fr\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x%2Ar%5E2\"$ $\"%22%22=%22%22\"$ $\"y\"$
\n" ); document.write( " $\"r%5E2\"$ $\"%22%22=%22%22\"$ $\"y%2Fx\"$
\n" ); document.write( " $\"r\"$ $\"%22%22=%22%22\"$ $\"%22%22+%2B-+sqrt%28y%2Fx%29\"$
\n" ); document.write( "The 1st and 3rd term of a G.P are 8 and 18 respectively
\n" ); document.write( "and the common ratio is positive, find the common ratio.

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document.write( "Plug in x=8 and y=18 in that and solve for r, using only \r\n" );
document.write( "the + of ±.\r\n" );
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document.write( "Edwin

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