∵a+x2=2000，b+x2=2001，c+x2=2002，∴b-a=1，c-b=1，c-a=2，∵abc=24，∴abc+cab+bac−1a−1b−1c=a2+ b2+c2−bc−ac−ab abc=2a2+2b2+2c2−2bc−2ac−2ab2abc=(a−b)2+(a−c)2+(b−c)22abc=1+4+12×24=...