已知x2-x-1=0,则-x3+2x2+2004的值为_____.
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已知x2-x-1=0,则-x3+2x2+2004的值为_____.已知x2-x-1=0,则-x3+2x2+2004的值为_____.已知x2-x-1=0,则-x3+2x2+2004的值为_____.-
已知x2-x-1=0,则-x3+2x2+2004的值为_____.
已知x2-x-1=0,则-x3+2x2+2004的值为_____.
已知x2-x-1=0,则-x3+2x2+2004的值为_____.
-x3+2x2+2004
=-x^3+x^2+x+x^2-x-1+2005
=-x(x^2-x-1)+(x^2-x-1)+2005
=2005
-x³+2x²+2004
=-x³+x²+x+x²-x-1+2005
=-x(x²-x-1)+(x²-x-1)+2005
=2005
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已知x2-x-1=0,则-x3+2x2+2004的值为_____.
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