(X-2)*180/X:(2X-1*)180/2X=3:4
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请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
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*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
化简[(x+2)/(x²-2x)+(x-1)/(x²-4x+4)]除以(x-4)/x