=(x-y)^5/(y-x)^2
=(x-y)^3追问
(x-y)^5/(y-x)^2 底数不同呀~
追答因为(y-x)²=(x-y)²
所以
(x-y)^5/(y-x)^2
=(x-y)^5/(x-y)²
=(x-y)³
(x-y)^7\/(x-y)^2\/(y-x)^2
(x-y)^7\/(x-y)^2\/(y-x)^2 =(x-y)^5\/(y-x)^2 =(x-y)^3
(x-y)^7\/(x-y)^3*(y-x)^7
解：如果是[(x-y)^7\/(x-y)³]×(y-x)^7，那么 原式=(x-y)^7÷(x-y)³×[-1×(x-y)]^7 =(x-y)^7÷(x-y)³×(-1)^7×(x-y)^7 =(x-y)^(7-3+7)×(-1)= -(x-y)^11 如果是(x-y)^7\/[(x-y)³×(y-x)^7]，那么 原式=(x-...
(x-y)^7除以(y-x)^3除以(y-x)^2=__
-(x-y)^2 (x-y)^7÷(y-x)^3 = (x-y)^7÷[-(x-y)^3] =-(x-y)^4 -(x-y)^4÷(y-x)^2=-(x-y)^4÷(x-y)^2=-(x-y)^2
(x-y)^7÷(y-x)^3÷(y-x)^2=?
(x-y)^7 =[-1*(y-x)]^7 =(-1)^y*(y-x)^7 =-(y-x)^7 所以原式=-(y-x)^7÷(y-x)^3÷(y-x)^2 =-(y-x)^(7-3-2)=-(y-x)^2
(x-y)^7÷(y-x)^2÷(x-y)^3
原式=(x-y)^7÷[-(x-y)]^2÷(x-y)^3 =(x-y)^7÷(x-y)^2÷(x-y)^3 =(x-y)^(7-2-3)=(x-y)^2
(x-y)7次方÷(y-x)3次方*(y-x)2次方
(x-y)7次方÷(y-x)3次方*(y-x)2次方 = (x-y)^7 ÷ (y-x)^3 * (y-x)^2 = (x-y)^7 ÷ (-1)*(x-y)^3 * (x-y)^2 = (-1)*(x-y)^4 * (x-y)^2 = (-1)*(x-y)^6 = - (x-y)^6
数学(X-Y)的7次方÷(Y-X的2次方)÷(X-Y)3次方 注;很急 请速度解决 全 ...
原式=(X-Y)的7次方÷(X-Y)的2次方÷(X-Y)3次方 =(X-Y)的7-2-3次方 =(X-Y)的2次方
(x-y)七次方÷(y-x)五次方÷(x-y)二次方
（x-y）七次方÷（y-x）五次方÷（x-y）二次方 =（x-y）七次方÷[-（x-y）]五次方÷（x-y）二次方 =-（x-y）七次方÷（x-y）五次方÷（x-y）二次方 = -(x-y)二次方÷（x-y）二次方 ＝-1
计算:{(x-y)^2·(y-x)^3}^2+(y-x)^3·(x-y)^7
计算:{(x-y)^2·(y-x)^3}^2+(y-x)^3·(x-y)^7 我来答 分享 复制链接http:\/\/zhidao.baidu.com\/question\/615907452147555892 新浪微博 微信扫一扫 举报 1个回答 #热议# 国际油价闪崩,大幅度下跌是何缘故?三叶草shuying 2014-03-04 · TA获得超过8812个赞 ...
(x-y)的平方(y-x)的七次方=
(x-y)的平方(y-x)的七次方=(y-x)的平方(y-x)的七次方=(y-x)的九次方
