(x-2)∧3-(x-1)∧2+1 (x-2)∧3 (x-1)∧2-1
_________________________ =____________ - ____________
(x-2) (x-2) (x-2)
x*(x-2)
=(x-2)∧2- ____________ =(x-2)∧2-x = x∧2-4x+4-x = x∧2-5x+4
(x-2)
因为x²-5x-2005=0 即x²-5x=2005
所以x∧2-5x+4=2005+4=2009 即
(x-2)∧3-(x-1)∧2+1
_________________________ =2009
(x-2)