1.-2(b-2a)^2+(b-2a)2.-3(x-y)^2-(y-x)^33.3(x+y)(y-x)-(x-y)^3

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1.-2(b-2a)^2+(b-2a)2.-3(x-y)^2-(y-x)^33.3(x+y)(y-x)-(x-y)^3

1.-2(b-2a)^2+(b-2a)2.-3(x-y)^2-(y-x)^33.3(x+y)(y-x)-(x-y)^3
1.-2(b-2a)^2+(b-2a)
2.-3(x-y)^2-(y-x)^3
3.3(x+y)(y-x)-(x-y)^3

1.-2(b-2a)^2+(b-2a)2.-3(x-y)^2-(y-x)^33.3(x+y)(y-x)-(x-y)^3
1.（b-2a）(-2b+4a+1)
2.(y-x)^2(-3-y+x)
3.(y-x)(3x+3y+(y-x)^2)

-2a(a+b)+b(a+b) (a+2b)(a-2b)+(a-b)(a+b)-2(a-3b)(a-b) 5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b) -a-b+2b^2/a+b 化简：|a+b|+|b-a|+|2b| |a+b|-|b-a|+|2b|化简哦! a-b+2b²/a+b 通分a-b,2b^/a+b 化简(2a-b/a+b-b/a-b)除以a-2b/a+b 计算：((a+b)(a-b)-(a-b)^2+2b(a-b))/4(a-b) 化简(2a-b/a+b-b/a-b)除以a-2b/a +b 化简：{[(2a-b)/(a+b)]-[b/(a-b)]}÷[(a-2b)/(a+b)] 计算·[(2a+-b)/(a+b)-b/(a+b)]/(a-2b)/(a+b) (2a-3b)[(a+b)-b(a-3b)] (a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²) (a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²) 化简：a-[b-2a-(a-b)] 化简（2a-b/a+b-b/a-b）÷a-2a/a-b