(x-y)^2n(x-y)^(2n+1)*(y-x) 怎么计算
计算(x-y)^3n*(y-x)^2n÷(y-x)^5n(n为正整数,且x≠y)
(x-2y)2n÷(2y-x)2n-1+(2x-y)(-2x-y)+(x-y)(-x+y)
求和:(x+1/y)+[x^2+1/(y^2)]...+[x^n+1/(y^n)](x,y不等于1)
计算:(y-x)的立方*(x-y)的n次方+2(x-y)的n+1次方*(y-x)的平方
计算(y-2x)的三次方(2x-y)的2n+1次方除以(y-2x)的2n+2次方 (n为正整数)
利用平方差公式计算:(x^2-y^2)×(x^2+y^2)×(x^4+y^4)…(x^2n+y^2n)
集合N={(x,y)|(x-1)^2}+(y-1)^20},M={(x,y)|x^2+y^2
设y=x(x-1)(x-2)(x-3)——(x-n),则y^(n+1)=?
计算:【(x-y)/(m-n)】的立方×【(n-m)/(y-x)】的四次方×【(2m-2n)/3y-3x】的平方
计算(1)(3m-4n)(3m+4n)-(2m-2n)(2m+n) (2)(x+5y)²-(x-5y)
已知M={(x,y)|2x+3y=4320,x,y∈N},N={(x,y)|4x-3y=1,x,y∈N},则( )
计算:1/(2x) - 1/(x+y)((x+y)/(2x) - x - y)