作业帮6(x-y)^3-12(x-y)^2
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6(x-y)^3-12(x-y)^2
6(x-y)^3-12(x-y)^2
6(x-y)^3-12(x-y)^2
6(x-y)^3-12(x-y)^2
=6(x-y)^2(x-y-2)
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[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)
化简(x+y)-(2x+y/2)-(3x+y/6)-(4x+y/12)-(5x+y/20)-……-(10x+y/90)
[2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
因式分解3x^2(x-y)+6x(y-x)
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
6(x-y)^3-12(x-y)^2
5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2
用换元法解方程组 2分之x+y+3分之x-y=6 2(x+y)+(x-y)=12
用换元法解方程组 2分之x+y+3分之x-y=6 2(x+y)+(x-y)=12
如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y,
解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组{2(x-y)/3 - x+y/4=-1 6(x+y)-41(x-y)=12
8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16
8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16
12y(x-y)^2-8(x-y)^3=?
2(x-2y)²-7(x-2y)³+3(2y-x)²+(2y-x)³合并同类项 这个式子2（x-2y)²-7（x-2y)³+3(2y-x)²-(2y-x)³=2（x-2y)²-7（x-2y)³+3(x-2y)²+(x-2y)³=5(x-2y)²-6(x-2y)³=(x-2y)²(5-6x+12y)