(x-y)(x-2y)-(3x-2y)(x-3y)答案应为-2x-x*x-3x,
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2(x-y)²-3(x-y)(-y-x)
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
计算(x-y)^2×(x-y)^3×(y-x)×(y-x)^2
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
3x+y=2 -y/x+y=123x+y=2 (-y/x)+y=12
(x-2y)(x+y)+(x+y)计算
计算:(x-y)^2-(x+y)(x-y)
3x(x-2y)+(x+2y)(2x-y)-3y(y-2x)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
(x-y/x+2y)³
[(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)
x(x-y)2-(y-x)3
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2)/2(x-y)^2
(2x+3y)(2x-y)-4y(2x-y) 因式分解