9999999-3x-5+3-39＝8567455

*-----------------------------------------------*| 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 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. |x-5|+|x-3| 3x-|x+5| (x+3)(x-5) x(2x－1)＝-3x(x+1)+5x²+3 混合运算6x+2x²-3x+x²+1其中x＝-5 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 方程:13X＋3＝14X＋2.4x+3＝3x+8 5（x+2）＝方程:13X＋3＝14X＋2.4x+3＝3x+85（x+2）＝2（2x+7）6（2x-7）＝5（x+7） (x+3x+5x...+2009x)-(2x+4x+6x+...+2010x) 5x+54+9x-8=3x+85 x/x-3-5x/x^2-x-6计算 x^5-x^4+x^3-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 4x(5x-2)＝3(5x-2) x-2/5x-3=39 x/5 + 2x/3 = 39