化简 (2x-1)(2x+1)-(4x+3)(x-1)

*-----------------------------------------------*| 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 || [x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简 化简：[(x+2)/x-(x-1)/(x-2)]/[(x-4)/(x^2-4x+4)] 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 (x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x 化简:(x-1)(x+2)(x-3)(x+4)+24 化简 (x+1)(x+2)(x+3)(x+4)-8 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 化简：x(x^2+x)/x^2(x^2-1) 化简:1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4) 化简1/[x(x+2)]+1/[(x+1)(x+3)]+1/[(X+2)(X+4)].+1/[(X+9)(X+11)] 化简 [(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/[(x-4)/x]要求要过程. 化简[(x+2）/（x²-2x)+(x-1)/(x²-4x+4)]除以（x-4)/x x^5-x^4+x^3-x^2+x-1 x^6-x^5+x^4-x^2+x-1 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 化简（x^2-4x+4/2x)÷(x^2-2x/x^2)+1 化简：1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)