(-4 3y的三次方)的三次方是多少
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X³+Y³=(X+Y)(X²-XY+Y²)
公式;1³+2³+3³+.+n³=[n×(n+1)÷2]²11³+12³+13³+14³+15³=(
已知x+y=1,则x^3+y^3+3xy=(x+y)(x^2-xy+y^2)+3xy=1×(x^2-xy+y^2)+3xy=x^2-xy+y^2+3xy=x^2+2xy+y^2=(x+y)^2=1^2
(x+y)^3+(z-x)^3-(y+z)^3=[(x+y)^3-(y+z)^3]+(z-x)^3=[(x+y)-(y+z)][(x+y)^2+(x+y)(y+z)+(y+z)^2]+(z-x)^3=
xy的三次方-2x²y²+x的三次方y=xy(y²-2xy+x²)=xy(x-y)²
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~
由自然数列立方和公式1^3+2^3+3^3+…+n^3=[n^2*(n+1)^2]/4可得:1^3+2^3+3^3+…+24^3=1/4*24^2*(24+1)^2=90000补充关于自然数列立方和公
y=(cosx+sinx+x^3)^(1/x)lny=ln(cosx+sinx+x^3)/x利用罗比塔法则:lim[x-->+∞]lny=lim[x-->+∞]ln(cosx+sinx+x^3)/x=
=xy(4x²+4xy+y²)=xy(2x+y)²
4x的三次方y+4x²y²+xy的三次方=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)
x³y-xy³=xy(x²-y²)=xy(x+y)(x-y)
xy(x+y)²-4x³y³=xy[(x+y)²-4x²y²]=xy(x+y+2xy)(x+y-2xy)
-7x的三次方y的平方-21x的平方y的三次方=-7x²y²(x+3y)再问:求第二题再答:(x-y)的三次方-(y-x)的平方=(x-y)的三次方-(x-y)的平方=(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)&
x³-y³-x²y+xy²=(x³-y³)-(x²y-xy²)=(x-y)(x²+xy+y²)-xy
y的三次方
-2m(y-x)的三次方=(2m)(x-y)的三次方再问:那这种题型的呢(x+y)(y-x)=-(x+y)()再答:(x+y)(y-x)=-(x+y)(x-y)