(3x-1)^20*(2x+3)^30/(7x+1)^50 当x趋向于无穷大时的极限是多少?

*-----------------------------------------------*| 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 (x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求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. 因式分解(x+1)(x-2)(x-3)(x-6)+20 计算:1/x(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-19)(x-20) 求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1 x^3+x-30(分解因式);x^12-y^12;x^15+x^14+x^13.x^2+x+1 解方程(x^2-3x+1)(x^2-3x+2)(x^2-9x+20)=-30 2x(x-1)-x(3x+2)=(-x-1)(x+6)-20 解方程X(X+1)-X(X-3)=2(X+1)(X-1)+20 x(x+1)²-x(x²-3)-2(x+1)(x-1)=20 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x{x+1}{x-1}}x-2}{x-3}-40 |x+1|-|x|+|x-2|-|-x+3|已知x+2 x^5-x^4+x^3-x^2+x-1 (X+1)X(X+2)X(X+3)=504 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