为什么我约分2x^2y(x-y)^2/12xy^2(y-x)到后面得x(x-y)^2/6y(y-x).而答案是x(y-x
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为什么我约分2x^2y(x-y)^2/12xy^2(y-x)到后面得x(x-y)^2/6y(y-x).而答案是x(y-x)/6y,其实我就是不明白分子里的(x-y)^2怎么和分母的(y-x)约分.可能比较难懂,坐等结果~
难道X-Y=Y-X?不好意思,我是比较笨
难道X-Y=Y-X?不好意思,我是比较笨
把(y-x)转化成-(x-y) 哦、了解了 -(x-y)=-x+y=y-x 比喻-(5-3) =-5+3=3-5=-2 上面那个(X-Y)^2=(y-x)^2因为是平方(X-Y)^2=[-(y-x)]^2=(-1)^2(y-x)^2=1 x(y-x)^2=(y-x)^2
为什么我约分2x^2y(x-y)^2/12xy^2(y-x)到后面得x(x-y)^2/6y(y-x).而答案是x(y-x
因式分解:x×x-xy-2y×y-x-y
1、x(x-y)(x+y)-x(x+y)^2
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
(x^2+xy/x-y)/(xy/x-y)计算
作乘法:(x+y)(x^2-xy+y^2);(x-y)(x^2+xy+y^2)
(1)(x^2/x)-y-x-y
【(x-y)^2+(x+y)(x-y)】除以 2x