document.write( "Question 448361: the fourth term of the binomial expansion for
\n" ); document.write( "(4x+y)^6 \n" ); document.write( "
Algebra.Com's Answer #308524 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "4th term of (4x+y)6\r\n" );
document.write( "\r\n" );
document.write( "The formula for the kth term of \r\n" );
document.write( "\r\n" );
document.write( "(A + B)N  is\r\n" );
document.write( "\r\n" );
document.write( "C(N,k-1)AN-k+1Bk-1\r\n" );
document.write( "\r\n" );
document.write( "So substitute A = 4x, B = y, k = 4, N = 6\r\n" );
document.write( "\r\n" );
document.write( "C(6,4-1)(4x)6-4+1y4-1\r\n" );
document.write( "\r\n" );
document.write( "C(6,3)(4x)造許r\n" );
document.write( "\r\n" );
document.write( "20(4x)造許r\n" );
document.write( "\r\n" );
document.write( "20*4逞造許r\n" );
document.write( "\r\n" );
document.write( "20*64x造許r\n" );
document.write( "\r\n" );
document.write( "1280x造許r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );