计算：x+6/x+5-x+7/x+6-x+8/x+7+x+9/x+8=?

(x+5)(x+6)(x+7)(x+8) 简便计算 x/x-3-5x/x^2-x-6计算 计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6 *-----------------------------------------------*| 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 计算：x^2-5x+6/x^2-x-2x^2-7x+12/x^2-2x-8 计算：x^2-5x+6/x^2-x-2x^2-7x+12/x^2-2x-8 计算(x-2)(x-3)+2(x+6)(x-5)-3(x平方-7x+13) 计算：x+6/x+5-x+7/x+6-x+8/x+7+x+9/x+8=? (x-4)/(x-5)+(x-8)/(x-9)-(x-5)/(x-6)-(x-7)/(x-8)分式计算 计算：(x+7)(x-6)-(x-2)(x+2) 计算(x+6)(x+7)-(x-4)(x+3) (-x)^5·x^3+x²·x^6+（-x)^7计算 (-x)^5·x³+x²·x^6+（-x)^7计算 (-x)^5·x³+x²·x^6+（-x)^7计算 计算x^2-5x+6/x^2-1/x^2+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 计算（x*x+4x+5）/（x+2）-（x*x+6x+10）/（x+3）+1 计算(1/x²+3x+2)+(1/x²+5x+6)+(1/x²+7x+12)