Expression 9: 2 Superscript, "s" plus "p" , Baseline times left parenthesis, 1 minus "s" plus Start sum from "n" equals 1 to 10, end sum, "B" left bracket, "n" , right bracket times "E" left bracket, "n" , right bracket , right parenthesis2s+p·1−s+10∑n=1Bn·En