5(x-y)的三次方 10y(y-x)的二次方-搜答案-搜搜做题作业网

5/12[-4/3(x-y)的三次方](x+y）的平方（-x-y）的三次方（y-x）的二次方＝(-5/9)×(x-y)³×(x+y)²×[-(x+y)³]×(x-y)&#

X³+Y³=(X+Y)(X²-XY+Y²)

1、(x+y)乘(x-y)的三次方+(x+y)的三次方乘(y-x)=（x+y)(x-y)((x-y)²-(x+y)²)=（x+y)(x-y)(x-y+x+y)(x-y-x-y)=-

因式分5（x－y）³＋10（y－x）²设x－y＝m∵（x－y）与（y－x）互为相反数∴y－x＝－m原式＝5m³－10m²＝5m²（m－2）＝5（x－y

(x-y)^5/[(y-x)^3(y-x)^2]＝(x-y)^5/[-(x-y)^3(x-y)^2]＝(x-y)^5/[-(x-y)^5]＝-1.

负的（x-y）的10次方再问：为什么呢？我要过程麻烦你了再答：后面两个（y-x）可以提负号，二次的提出来是正的，三次的是负的。会了吧~

5(x-y)的二次方+15（x-y)的三次方=5(x-y)²【1-3（x-y）】=5(x-y)²(1-3x+3y)如果本题有什么不明白可以追问,再问：请问【1-3（x-y）】怎么得

原式＝(x-y)^4(x-y)(x-y)^3=(x-y)^4(x-y)^4=2(x-y)^4

x的平方y再答：公因式就是共有的东西再问：在问一下（x+y-z）（x-y+z）-（y+z-x）(z-x-y)的公因式是什么再答：x+y-z再答：把负号放到(z-x-y)里再问：哦

=（y-x)^3-(y-x)=(y-x)[(y-x)^2-1]=(y-x)(y-x+1)(y-x-1)

=xy(4x²+4xy+y²)=xy(2x+y)²

x+y的三次方*x+y的二次方=(x+y)^3(x+y)^2=(x+y)^(3+2)=(x+y)^5

x的三次方+8y三次方=(x+2y)(x平方-2xy+4y平方）

x/(x+y)(x--)^3=x/(x+y)(x--y)^3y/(y+x)(y--x)^2=y(x--y)/(x+y)(x--y)^3.

x³y-xy³=xy(x²-y²)=xy(x+y)(x-y)

x^3+x-y^3-y=(x^3-y^3)+(x-y)=(x-y)(x^2+xy+y^2)+(x-y)=(x-y)(x^2+xy+y^2+1).x^3-x^2-y^3+y^2=(x^3-y^3)-(x

您好：x的三次方(y-x)的三次方-(x-y)的三次方=x的三次方(y-x)的三次方+(y-x)的三次方=（x³+1）(y-x)³=（x+1）（x²-x+1）(y-x)&

后面是10（y-x)²原式=5(x-y)³-10(x-y)²=5(x-y)²(x-y-2)

原式=5|x|√(xy)-2y*√(xy)/|x|-6x√(xy)/|x|=(5|x|-2y/|x|-6x/|x|)*√(xy)

题目是不是(x^3+y^3)/(x+y)?应该等于x^2+xy+y^2