document.write( "Question 1075177: Sum of second and third is 6, third and fourth is -12. Find the common ratio \n" ); document.write( "

Algebra.Com's Answer #689831 by josgarithmetic(39620) $\"\"$ $\"About$

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first term x
\n" ); document.write( "common ratio r\r
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\n" ); document.write( "\n" ); document.write( " $\"system%28xr%2Bxr%5E2=6%2Cxr%5E2%2Bxr%5E3=-12%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "Dividing second equation by first equation and simplifying.
\n" ); document.write( " $\"r%5E2%2B3r%2B2=0\"$
\n" ); document.write( " $\"%28r%2B1%29%28r%2B2%29=0\"$
\n" ); document.write( " $\"r=-2\"$ --------------- the ratio.\r
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