document.write( "Question 448472: Evaluate the series 4+8+16 to S[6] \n" ); document.write( "
Algebra.Com's Answer #308586 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,\r
\n" ); document.write( "\n" ); document.write( "4+8+16+32+64+128 = \"sum%28+2%5E%28n%2B1%29%2C+n=1%2C+6+%29\"
\n" ); document.write( "or
\n" ); document.write( " \"sum%28+2%5E%28n%2B1%29%2C+n=1%2C+6+%29+=+a%5B1%5D%28%281-r%5En%29%2F%281-r%29%29\" where r = 2
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