x^2(x-y)^2-4(y-x)^2 回答正确给好评
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x^2(x-y)^2-4(y-x)^2 回答正确给好评
x^2(x-y)^2-4(y-x)^2 回答正确给好评
x^2(x-y)^2-4(y-x)^2 回答正确给好评
(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)】
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
计算:[(x+y)³-2(x+y)²-4(x+y)]÷(x+y)
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
{(x²+y²)-(x-y)+2y(x-y)}/4y
(x-2y)(x+y)+(x+y)计算
计算:(x-y)^2-(x+y)(x-y)
2(x-y)²-3(x-y)(-y-x)
y'=(y/x)^2+y/x+4微分方程
化简x+y分之x²-y²-2X-y分之4x(x-y)+y²
(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 +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x^2/2y^2除以2y^2/x
((x+2y)(x-2y)+4(x-y)的2次)/6x