计算或化简:(1)计算:|-4|-(3-1)0+2cos45°+3?8(2)化简:(x+1x2?x-xx2?2x+1)÷1x
计算或化简:(1)计算:|-4|-(3-1)0+2cos45°+3?8(2)化简:(x+1x2?x-xx2?2x+1)÷1x....
计算或化简:(1)计算:|-4|-(3-1)0+2cos45°+3?8(2)化简:(x+1x2?x-xx2?2x+1)÷1x.
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