A、B、C是数轴上三点,分别表示a、b、c三数,已知(a+2)^+|b-4|=0,(c+1)/3-(c-2)/6=(4-c)/2 (1)求AB的长和C(2)P为数轴上AB间一点,为P到何处时PA+PB+PC的最大值,并求出这个值(3)M是OA中点,N是BC中点,线段MN、
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![A、B、C是数轴上三点,分别表示a、b、c三数,已知(a+2)^+|b-4|=0,(c+1)/3-(c-2)/6=(4-c)/2 (1)求AB的长和C(2)P为数轴上AB间一点,为P到何处时PA+PB+PC的最大值,并求出这个值(3)M是OA中点,N是BC中点,线段MN、](/uploads/image/z/3726720-0-0.jpg?t=A%E3%80%81B%E3%80%81C%E6%98%AF%E6%95%B0%E8%BD%B4%E4%B8%8A%E4%B8%89%E7%82%B9%2C%E5%88%86%E5%88%AB%E8%A1%A8%E7%A4%BAa%E3%80%81b%E3%80%81c%E4%B8%89%E6%95%B0%2C%E5%B7%B2%E7%9F%A5%EF%BC%88a%2B2%EF%BC%89%5E%2B%7Cb-4%7C%3D0%2C%28c%2B1%29%2F3-%28c-2%29%2F6%3D%284-c%29%2F2+%281%29%E6%B1%82AB%E7%9A%84%E9%95%BF%E5%92%8CC%282%29P%E4%B8%BA%E6%95%B0%E8%BD%B4%E4%B8%8AAB%E9%97%B4%E4%B8%80%E7%82%B9%2C%E4%B8%BAP%E5%88%B0%E4%BD%95%E5%A4%84%E6%97%B6PA%2BPB%2BPC%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%2C%E5%B9%B6%E6%B1%82%E5%87%BA%E8%BF%99%E4%B8%AA%E5%80%BC%EF%BC%883%EF%BC%89M%E6%98%AFOA%E4%B8%AD%E7%82%B9%2CN%E6%98%AFBC%E4%B8%AD%E7%82%B9%2C%E7%BA%BF%E6%AE%B5MN%E3%80%81)
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