document.write( "Question 860678: find the sum of the first eight terms in the series -4+8-16+… \n" ); document.write( "
Algebra.Com's Answer #518594 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! S=t*(1 - r^n)/(1 - r) \n" ); document.write( "r=-2 \n" ); document.write( "S=-4*(1 - (-2)^8)/(1 - (-2)) \n" ); document.write( "S = 340 \n" ); document.write( " \n" ); document.write( " |