document.write( "Question 742217: Find: S=∑[n-1,∞,-4](-1/8)^(n-1)\r \n" );
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document.write( "(The n-1 is below the ∑, the ∞ is above, and the -4 is on the right side of the ∑.)\r \n" );
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document.write( "Thank you! \n" );
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