一、计算 (1)x^2(x^2-x-1)-x(x^2-3x) (2) (2m+3)(m-2)-(1-2m)(3-m) (
一、计算 (1)x^2(x^2-x-1)-x(x^2-3x) (2) (2m+3)(m-2)-(1-2m)(3-m) (
计算x^3m/(x^m-1)-x^2m/(x^m+1)-1/(x^m-1)+1(x^m+1)
计算:(1)(m-n)^2*(n-m)^5*(m-n)^5 (2)(-x)^2*x^3+2x^3*(-x)^2-x*x^
计算:(x-y)m(y-x)2m+(y-x)3m.
x^(3)*x^(2m +1)*x^(m)=x^(31) 求m的值
m x平方-2x-m+1
计算(x+2)^m-1*(2+x)^m+1-(x+2)^2*(2+x)^2m
1.计算(1) 7(m³+m²+m-1)-3(m³+m) (2) (x-3) (x+3)
计算:x的平方+2(m-1)x+m的平方-2m-3=0
计算:(m+2n)/(n-m)+n/(m-n)-2m(n-m)和[(x+2)/(x×x-2x)-(x-1)/(x×x-4
已知方程x^3-(2m+1)x^+(3m+2)x-m-2=0
已知x^m=2,x^n=5.(1)x^m+n、x^m-n的值;(2)求x^3m-2n的值