=[-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)^3÷(y-x)^2=?
所以原式=-(y-x)^7÷(y-x)^3÷(y-x)^2 =-(y-x)^(7-3-2)=-(y-x)^2
数学计算:(x-y)^7\/(y-x)^6+(-y-x)^3\/(x+y)^2(PS.求详细过程!)
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...x-y)^2(y-)^2= 3. (x-y)^2(y-x)^3= 4.(x-y)^3(y-x)=
2. (x-y)^2(y-x)^2 = (y-x)^2(y-x)^2 = (y-x)^(2+2) = (y-x)^4 3. (x-y)^2(y-x)^3 = (y-x)^2(y-x)^3 = (y-x)^(2+3) = (y-x)^5 4.(x-y)^3(y-x) = -(y-x)^3(y-x) = -(y-x)^(3+1) = -(y-x)^4 ...
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 知道小有建树答主 回答量:2866 采...
计算:(x-y)^7\/(y-x)^6+(-x-y)^3\/(x+y)^2
（x-y）^7\/(y-x)^6+（-x-y）^3\/(x+y)^2 =(x-y)^7\/(x-y)^6-(x+y)^3\/(x+y)^2 =x-y-(x+y)=x-y-x-y =-2y
(x-y)^2·(y-x)^3=多少?
(x-y)^2·(y-x)^3=(y-x)^5
(x-y)(y-x)^2
同底数幂相乘指数相加。(x-y)(y-x)^2 =(x-y)*（x-y)^2 =(x-y)^3
(x-y)^3·(y-x)^2·(y-x)^5详细过程
(x-y)^3·(y-x)^2·(y-x)^5 =(x-y)^3·(x-y)^2·(y-x)^5 =(x-y)^5 *(y-x)^5 =-(x-y)^5*(x-y)^5 =-(x-y)^10
(x —y )^3乘(y —x )^2
x减y的立方和y减x的立方相等，所以就是y减x的五次方
(x-y)^3-(y-x)^2 因式分解
你明白什么是因式分解吗？就是把加减的式子换成乘积的形式哈。经常有这样的题，看似没有公因式，其实，公因式是一个相反数，及x-y与y-x，只差一个负号 所以原式=(x-y)^3-【-(x-y)】^2=(x-y)^3-(x-y)^2=(x-y)^2*（x-y-1）...
