2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
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2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
=(x+y)(6-16)+(x-y)(2-5-1)
=-10(x+y)-4(x-y)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
化简:5(x-y)+2(x+y)-3(x-y)
2(x-y)²-3(x-y)(-y-x)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
(2x-3y)-(5x-y)
(2X-3y)-(5x-y)
(2x-5y)(3x+y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+(x-3y)(x-5y)+(x-2y)(x-4y)
[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)请帮我一下写两道计算题[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以(4x)
(2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解
[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
x(x-y)2-(y-x)3
先化简,再求值 [2/3x - 2/x+y(x+y/3x -x-y)]*x/x-y,其中5x+3y=0
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x