y-x的平方乘以x-y的三次方?
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x^2+2x+y^2-6y+10=0可以化解为(x+1)^2+(y-3)^2=0,等价于x+1=0且y-3=0,所以有x=-1,y=3,故x^3*y=-3.
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
根号和平方大于等于0,相加等于0,若有一个大于0,则另一个小于0,不成立所以两个都等于0所以x+y+7=0xy-5=0x+y=-7,xy=53x^2y^3+3x^3y^2=3x^2y^2(x+y)=3
(x-y)³×(x-y)²×(y-x)=(x-y)³×(x-y)²×[-(x-y)]=-(x-y)的6次方
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(
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~
(y-x)的五次方
原式=4(x-y)^3*(-1/8)(x-y)^6=-(1/2)(x-y)^9
1、-(X-Y)的8次方2、-(A-B-C)的6次方都是偶次方是不是可以化为正呢?!
(x-2y)2*(2y-x)3=(x-2y)2*(2y-x)2*(2y-x)=(x-2y)2*(x-2y)2*-(x-2y)=-(x-2y)5结果等于-(x-2y)的5次方
【x+y】的平方=二,【x-y】的立方=三,求【x+y】的七次方乘以【x-y】的平方乘以-【x+y】的三次方乘以【y-x】【x+y】的七次方乘以【x-y】的平方乘以-【x+y】的三次方乘以【y-x】=
x/(x+y)(x--)^3=x/(x+y)(x--y)^3y/(y+x)(y--x)^2=y(x--y)/(x+y)(x--y)^3.
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)&
x³-y³-x²y+xy²=(x³-y³)-(x²y-xy²)=(x-y)(x²+xy+y²)-xy
(-2x^my^3)*(3x^3*y^2)*(5x^2y^n)=-30x^4y^3-30x^(m+3+2)y^(3+2+n)=-30x^4y^3m+3+2=4m=-13+2+n=3n=-2
-(x-y)^10那位错了吧如果有什么不懂的,欢迎继续问我来自“理科最强”团队
你要先给出x,y的值才行