①已知x²-4x+1=0,求x²\x四次方+x²+1.②已知x\x²-4x-1=-1\3,求x四次方+2x+1\x五次

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①已知x²-4x+1=0,求x²\x四次方+x²+1.②已知x\x²-4x-1=-1\3,求x四次方+2x+1\x五次

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