①[(x+y)^2-(x+y)(x-y)]/2y②（-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4)^2高手帮帮忙

来源：学生作业帮助网编辑：作业帮时间：2024/05/10 07:29:33

①[(x+y)^2-(x+y)(x-y)]/2y②（-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4)^2高手帮帮忙
①[(x+y)^2-(x+y)(x-y)]/2y②（-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4)^2高手帮帮忙

①[(x+y)^2-(x+y)(x-y)]/2y②（-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4)^2高手帮帮忙
①[(x+y)^2-(x+y)(x-y)]/2y
=[(x+y)(x+y-x+y)]/2y
=[(x+y)*2y]/2y
=x+y
②（-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4)^2
=(1/9a^6b^4)(-8a^3b^6)/(1/81a^8b^8)
=(-8/9a^9b^10) /(1/81a^8b^8)
=-72ab^2

我告诉你解题思路，你自己计算，这两道题并不难，不能只想着求助，要自己思考。
第一题，把分子上的因式都打开，然后合并同类项，就可以约分了。
第二题，分子分母全都是相乘的关系，所以也是一样，把括号都打开，约分就可以了

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 化简y(x+y)+(x+y)(x-y)-x^2 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 因式分解x(x+y)(x-y)-x(x+y)^2 {(x,y) |x|+|y| x>y?x:y [(x-y)^2-(x+2y)(x-2y)]/y 计算:y-x分之x+y+x-y分之y-y-x分之2x-y x^2(x-y)+(y-x) x(x-y)2-(y-x)3 【(x-y)^2+(x+y)(x-y)】除以 2x [(x-y)²+(x+y)(x-y)]除以2x [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 化简：[(x+y)(x-y)(x+y)^2-2y(x-2y)](-2y) 谢谢!