Example--Verification (s2+1)(s+2)(s+3)=6s4+6s3+6s2+6s+5 6 65 6 6 E 5 30 S E 5 5 Examine 1st column,of sign changes= 6Example--Verification 2 432 ( 1)( 2)( 3) 6 6 6 6 5 s s s ssss 4 3 2 0 665 660 5 s s s s s 30 6 5 Examine 1st column, # of sign changes=