(x^3y)^-2×(x^-2×y^2)^21
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(x^3y)^-2×(x^-2×y^2)^21(x^3y)^-2×(x^-2×y^2)^21(x^3y)^-2×(x^-2×y^2)^21原式=x^(-6)y^(-2)×x^(-4)y^4=x^(-1
(x^3y)^-2×(x^-2×y^2)^21
(x^3y)^-2×(x^-2×y^2)^2
1
(x^3y)^-2×(x^-2×y^2)^21
原式
=x^(-6) y^(-2)×x^(-4) y^4
=x^(-10) y^2
2(x-y)²-3(x-y)(-y-x)
x(x-y)2-(y-x)3
[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
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
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)
(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)】
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
计算:x+2y/x-y+2x/y-x-3y/x-y
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
3x+y=2 -y/x+y=123x+y=2 (-y/x)+y=12