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        1. 2013•hģ(jin)ֵ
          x2-16
          x2+8x+16
          +
          x
          x-4
          1
          x2-16
          x=2sin45+1
          ȸ(j)ʽ\(yn)ķtԭʽM(jn)л(jin)xֵԭʽM(jn)Ӌ(j)㼴ɣ
          ⣺ԭʽ=
          x-4
          x+4
          +
          x
          x-4
          •x+4x-4
          =x-42+xx+4
          =2x2-4x+16                                                        
          (dng)x=2sin45+1=
          2
          +1r(sh)ԭʽ=2
          2
          +12-4
          2
          +1+16=1
          c(din)u(png)}ǷʽĻ(jin)ֵ֪ʽ\(yn)ķtǽ}P(gun)I
          (x)(c)ϵд
          P(gun)(x)}

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          1CEACBƽ־Oc(din)EABEĶȔ(sh)
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          ͬ(x)(c)