(1) (4y^2)/(x-2y)+(4x^2y)/(4y^2-x^2)+x+2y

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(1) (4y^2)/(x-2y)+(4x^2y)/(4y^2-x^2)+x+2y
(2)为了方便顾客,有很多水果摊位都将菠萝分为带皮的何去皮的两类来卖,粗略估计,一只菠萝皮的质量约占菠萝总质量的35%.如果设M微带批示波罗的质量,P为带皮时的菠萝单价,那么如何确定去皮菠萝的单价P1?
(3)类比8/3=2+2/3,是将分式（6x-1)/(2x-1)化为一个整式与一个真分式的和的形式.
(4)若（a+b)/2=(b-2c)/3=(3c-a)/4,求分式（5a+6b-7c)/(8a+9b)(a≠0）的值.
（5）(x-1)/(x^2-6x+9)-1/(x-3)-2x/(9-x^2)

1./(4y^2-x^2) =x^3-2x^2y/(x^2 -4y^2=x^2/(x+2y)
2.带皮总价钱mp 去皮菠萝价钱(1-35%)mp1 (1-35%)mp1= mp p1=p/(1-35%)=100p/75 =4p/3
3.(6x-3+2)/(2x-1)=3+2/(2x-1)
4.（a+b)/2=(b-2c)/3=(3c-a)/4=k a+b=2k b-2c=3k 3c-a=4k a= -11k/5 b=21k/5 c=3k/5
（5a+6b-7c)/(8a+9b)=50/101
5./(x-3)(x-3)(x+3) = (2x^2-4x+6)/(x-3)(x-3)(x+3) =2(x+1)/(x^2-9)

x^2-y^2/x+y-4x(x-y)+y^2/2x-y, 1) (2x+5y)(2x-5y)(-4x^2-25y^2) 2) [（x+y)(x-y)-(x-y)^2+2y(x-y {(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y (2x-y)^2-4(x-y)(x+2y) (2x-y)²-4(x-y)(x+2y) 化简：（2x-y)²-4(x-y)(x+y) x+2y+4y^2/x-y+4x^y/4y^2-x^2 1 4(x-y+1)+y(y-2x) 把4（x-y+1)+y(y-2x)因式分解 4(x-y+1)+y(y-2x) 1、x(x-y)(x+y)-x(x+y)^2 4x(y-x)-y^2因式分解