x{3x-[(x+2y)-(2x-y)]}+5,求大师们速速回答!要有正确的解题方法!
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x{3x-[(x+2y)-(2x-y)]}+5,求大师们速速回答!要有正确的解题方法!
x{3x-[(x+2y)-(2x-y)]}+5,求大师们速速回答!要有正确的解题方法!
x{3x-[(x+2y)-(2x-y)]}+5,求大师们速速回答!要有正确的解题方法!
x{3x-[(x+2y)-(2x-y)]}+5
=x[3x-(x+2y-2x+y)]+5
=x(3x+x-3y)+5
=4x²-3xy+5
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,
(x-2y)(x+y)+(x+y)计算
计算:(x-y)^2-(x+y)(x-y)
x(x-y)2-(y-x)3
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)
[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
先化简,再求值 [2/3x - 2/x+y(x+y/3x -x-y)]*x/x-y,其中5x+3y=0