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∵x²-5x-1997=0
∴x²-5x=1997
[(x-2)^3-(x-1)²+1]/(x-2)
=(x³-6x²+12x-8-x²+2x-1+1)/(x-2)
=(x³-7x²+14x-8)/(x-2)
=(x³-8)-(7x²-14x)/(x-2)
=[(x-2)(x²+2x+4)-7x(x-2)]/(x-2)
=(x-2)(x²+2x-7x+4)/(x-2)
=x²-5x+4
=1997+4
=2001
∴x²-5x=1997
[(x-2)^3-(x-1)²+1]/(x-2)
=(x³-6x²+12x-8-x²+2x-1+1)/(x-2)
=(x³-7x²+14x-8)/(x-2)
=(x³-8)-(7x²-14x)/(x-2)
=[(x-2)(x²+2x+4)-7x(x-2)]/(x-2)
=(x-2)(x²+2x-7x+4)/(x-2)
=x²-5x+4
=1997+4
=2001
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