[(2X-1)^30*(3X+2)^20]/(5X+1)^50求当X趋近于无穷时的极限?
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(x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求X
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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