[(2X－1)^30*(3X＋2)^20]/(5X＋1)^50求当X趋近于无穷时的极限?

*-----------------------------------------------*| 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. 多项式x^4+2x^3-4x^2-2x+3与x^3+4x^2+x-6的最大公因式是什么x^4+2x^3-4x^2-2x+3＝(x^4＋3x^3)－x(x^2＋4x＋3)＋(x＋3)＝x^3(x＋3)－x(x＋1)(x＋3)＋(x＋3)＝(x＋3)[x^3－x(x＋1)＋1]＝(x＋3)[x^3＋1－x(x＋1)]＝(x＋3)[(x＋1)( 因式分解(x+1)(x-2)(x-3)(x-6)+20 x+2/x+3－x+1/x+2=x+8/x+9－x+7/x+8 (-x^4)^2-2(x^2)^3×x×x＋(－3x)^3×x^5 求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1 计算:1/x(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-19)(x-20) 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分之X=X-5分之X－4怎么解?还有X减3分之X等于X减1分之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