document.write( "Question 6197: Simplify 1+a^2+a^3+................+a^n \n" ); document.write( "
Algebra.Com's Answer #3295 by khwang(438)\"\" \"About 
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This is a geometric series with common ratio a,
\n" ); document.write( " which sum is equal to\r
\n" ); document.write( "\n" ); document.write( " (a^(n+1) -1) /(a-1)\r
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