document.write( "Question 328502: In the expansion of (1 + 1/6x) to the power n, n belongs to N, n>8 the coeffient of x to the power 7 and x to the power 8 are equal find n.\r
\n" );
document.write( "\n" );
document.write( "I have tried n(n-1)....(n-6) (1) to the power n-7 all over 7!
\n" );
document.write( "and n(n-1)....(n-7)(1) to the power n-8 all over 8!\r
\n" );
document.write( "\n" );
document.write( "1 = n-7 over 8
\n" );
document.write( "8 = n-7
\n" );
document.write( "n=15\r
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #235285 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! Are you forgetting the ( \n" ); document.write( "I used \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "Start there, that should get you in the right direction. \n" ); document.write( " |