9x的三次方y的平方-12x的平方y的平方z 3x的平方y的平方
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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)
x^3y-2x^2y^2+xy^3=x^3y+2x^2y^2+xy^3-4x^2y^2=xy(x^2+2xy+y^2)-4x^2y^2=xy(x+y)^2-4x^2y^2=12×7×7-4×12×12
(-2x^2*y)^3(3xy^2)^2-12x^3*y^3(-5x^5*y^4)=-8x^6*y^3(3xy^2)^2+60x^8*y^7=-24x^8*y^7+60x^8*y^7=36x^8*y^
6(x-y)的三次方+12(x-y)的平方-3(y-x)的平方=6(x-y)³+12(x-y)²-3(x-y)²=6(x-y)³+9(x-y)²=3(
x-y=2两边同时平方又x^2+y^2=12所以xy=4原式=xy(x^2-2xy+y^2)=xy(x-y)^2=16
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~
提出公因式4x的平方y的平方乘以(4y-3x+2)再问:做到这一步就结束了?、再答:1.分解因式技巧掌握: ①分解因式是多项式的恒等变形,要求等式左边必须是多项式 ②分解因式的结果必须是以乘积的形
9(x-2y)的三次方-x的平方(x-2y)=(x-2y)[9(x-2y)²-x²]=(x-2y)[3(x-2y)+x][3(x-2y)-x]=(x-2y)(4x-6y)(2x-4
x²y³-2x(4xy³)=x²y³-2x²y³=-x²y³
12y(x-y)²-8(x-y)³-4(x-y)²=4(x-y)²[3x-2(x-y)-1]=4(x-y)²(x+2y-1)
x/(x+y)(x--)^3=x/(x+y)(x--y)^3y/(y+x)(y--x)^2=y(x--y)/(x+y)(x--y)^3.
6xy²+9x²y+y³=y(9x²+6xy+y²)=y(3x+y)²
xy(x+y)²-4x³y³=xy[(x+y)²-4x²y²]=xy(x+y+2xy)(x+y-2xy)
(x-y)^3+9(x-y)-6(x-y)^2=(x-y)[(x-y)^2-6(x-y)+9]=(x-y)[(x-y)-3]^2=(x-y)(x-y-3)^2
-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(x-3y)²/y(x+3y)(x-3y)=x(x-3y)/y(x+3y)
-x*y的二次方z的三次方*(-x的平方y)的三次方=-xy²z³*(-x³y³)=x^4y^5z³很高兴为您解答,【the1900】团队为您答题.请
x³-y³-x²y+xy²=(x³-y³)-(x²y-xy²)=(x-y)(x²+xy+y²)-xy
你要问啥呀~!只给出了一个解析式……再问:y等于0求x再答:即x^3+x^2-9x-9=0x*(x^2-9)+x^2-9=0(x^2-9)*(x+1)=0(x+3)*(x-3)*(x+1)=0故,x=
原式=x(x²-8x+12)=x(x-2)(x-6)