x三次方-y三次方-搜答案-智慧作业帮

(x-y)七次方÷【(x-y)三次方÷(y-x)】三次方=(x-y)七次方÷【-(x-y)²】三次方=(x-y)七次方÷【-(x-y)六次方】=-(x-y)=y-xm+1+2n-1=5n+2

x三次方(x-2y)+y三次方(2x-y)=x³（x-2y)-y³(x-2y)=(x-2y)(x³-y³)=(x-2y)(x-y)(x²+xy+y&#

X³+Y³=(X+Y)(X²-XY+Y²)

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

3x³-5x²y+xy²+y³=3x³-3x²y-2x²y+2xy²-xy²+y³=3x²

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~

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

x^3+y^3+z^3-3xyz=(x+y+z)(x^2+y^2+z^2-xy-yz-zx)=(x+y+z)[(x-y)^2+(y-z)^2+(z-x)^2]/2≥0x^3+y^3+z^3≥3xyz

=xy(4x²+4xy+y²)=xy(2x+y)²

1.为了简化算式,设A=2000的立方根,B=2001的立方根,C=2002的立方根A^3=2000,B^3=2001,C^3=2002A^3x^3=B^3y^3=C^z^3y=Ax/Bz=Ax/C2

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）

x³y-xy³=xy(x²-y²)=xy(x+y)(x-y)

a^3+b^3=(a+b)*(a^2-ab+b^2）.(a,b分别用X,Y代替吧,这是一个立方和公式)不过我感觉应该是最简了吧,如果用立方和来解开的话,计算步骤有会增多

/>x^3+y^3+z^3-3xyz=x^3+x^2y+x^2z+y^2x+y^3+y^2z+z^2x+z^2y+z^3-x^2y-y^2x-xyz-xyz-y^2z-yz^2-x^2z-xyz-z^

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)&

根号9X三次方Y方(X+Y)三次方=3xy(x+y)√x(x+y)再问：请问过程再答：√9x³y²(x+y)³=√3²x²y²(x+y)&#

(X+Y)³=X³+3X²Y+3XY²+Y³再问：（x+y）³=x³+3x²y+3xy²+y³再答：

y=x三次方+x方之一

是非奇非偶函数因为取x时与取-x时不符合上述函数的性质x^3是奇函数,x^-2是偶函数,复合就是非奇非偶再问：你这是网上随便弄来的答案吧，正确答案是奇函数，你不要随便乱答了再答：没有啊，其实题目有问题