1(y-x )²(x-y)+(x-y)³ +3(x-y)²(y-x)
2(a-b)五次方x (b-a)²/(b-a)³
3(3x-1)²(3x+1)²
4若X²-10XY+25Y²=0 则X/Y是多少
5若X:Y=3:2 并且3X+2Y=13 则X= Y=
1(y-x )²(x-y)+(x-y)³ +3(x-y)²(y-x)
2(a-b)五次方x (b-a)²/(b-a)³
3(3x-1)²(3x+1)²
4若X²-10XY+25Y²=0 则X/Y是多少
5若X:Y=3:2 并且3X+2Y=13 则X= Y=
1
(y-x )²(x-y)+(x-y)³ +3(x-y)²(y-x)
=-(y-x)³-(y-x)³ +3(y-x)³
=(y-x)³
2(a-b)五次方x (b-a)²/(b-a)³
=(a-b)^5/(b-a)
=-(b-a)^4
3(3x-1)²(3x+1)²=[(3x-1)(3x+1)]²=(9x²-1)²
4若X²-10XY+25Y²=0 则X/Y是多少
(x-5y)²=0 x=5y
x/y=5
5若X:Y=3:2 并且3X+2Y=13
则X=3 Y=2
(y-x )²(x-y)+(x-y)³ +3(x-y)²(y-x)
=-(x-y)³+(x-y)³ +3(y-x)³
=(y-x)³
2(a-b)^5x (b-a)²/(b-a)³
=(a-b)^5/(b-a)
=-(b-a)^4
3(3x-1)²(3x+1)²=[(3x-1)(3x+1)]²=(9x²-1)²
4若X²-10XY+25Y²=0 则X/Y是多少
(x-5y)²=0 x=5y
x/y=5
5若X:Y=3:2 并且3X+2Y=13
则X=3 Y=2
1.原式=2(x-y)³-3(x-y)³=-(x-y)³
2.原式=(a-b)^4
3.原式=(3x+1+3x-1)(3x-1-3x-1)=-12x
4.(x-5y)²=0 那么x-5y=0或5y-x=0
那么x:y=5:1
5.设x=3k,y=2k,则
9k+4k=13
所以k=1 所以x=3 y=2