2-1/2-1/3-2x（-2）-1/2x（-2）^2-1/3x（-2）^3

*-----------------------------------------------*| 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 || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. 请问这道题咋做 ：（x）X (x+1) X (x+2) X (x+3) =360 解九宫格题目（X为未知数）9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 |x+1|-|x|+|x-2|-|-x+3|已知x+2 x{x+1}{x-1}}x-2}{x-3}-40 x^5-x^4+x^3-x^2+x-1 (X+1)X(X+2)X(X+3)=504 (x-1)^3(x+1)（x-2）/(x+4) x(x+1)(x+2)(x+3)+1 (换元法） （x+2)(x-2)+16 (x-1)(x-2)+3x（x+3）-4（x+2)(x-3)（x+2)(x-2)+16 (x-1)(x-2)+3x（x+3）-4（x+2)(x-3) 计算 x(x+3)-(x-1)(x-2） 化简：x(2x+1)-x(x-3） 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 3x(x^2-x-1)-(x+1)(3x^-x) X^3(x-y)+x(y-x) （x+1)(x+2)(x+3)(x+4）+1(x+1)(x-2)(x+3)(x-4)+25