document.write( "Question 974742: If the fifth term of a geometric progression is -2 and the seventh term is -8, what is the first term? thanks \n" ); document.write( "
Algebra.Com's Answer #596575 by josgarithmetic(39617)\"\" \"About 
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a, ar, ar^2, ar^3, -2, ar^5, -8, ....\r
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\n" ); document.write( "\n" ); document.write( "\"-2%2Ar%5E2=-8\"
\n" ); document.write( "\"r%5E2=4\"
\n" ); document.write( "\"r=-2\" or \"highlight_green%28r=2%29\".\r
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\n" ); document.write( "\n" ); document.write( "\"ar%5E4=-2\"
\n" ); document.write( "\"a=-2%2Fr%5E4\"
\n" ); document.write( "\"a=-2%2F16\"
\n" ); document.write( "\"highlight%28a=-1%2F8%29\"
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