宗晓莲:小妹又来请教数学了 帮下忙~初2

(1)若x2+y2=3xy,则[x2/1+y2/1+x+y/1(x/1+y/1)]÷9xy/x+y)2的值为---( )
A:5/3 B:5/4 C:3/4 D:3/5

(2)计算:(a+b)×(a+b)2/a+a+b/b=________
(3)计算:(x+X/y2)×(1-x2+y2/y2-x2)=_______
(4)计算:a-b/a2-b2÷(2-ab/a2+b2)=_______
(5)计算:x2+x-6/8x+9=x+3/A+x-2/B,则A=____ B=_____
(6)(x-1/x+1-x/1)÷x-1/x
(7)(x-2/x-x+2/x)×x/2-x
(8)(1-1-a/a)×(a2/1-1)
(9)a2-2a+1/4a2-4a÷(a-a/a+1-a+1/a-1)×3a-3/1
(10)x-3/x-x2-3x/x+6+x/1
(11)1+(x-1-x/1)
(12)2a+2/1+1-a2/3a-1+3(a-1)/5
(13)x2-6x+9/x-1-x-3/1-9-x2/2x
(14)1-a/1+1+a/1+1+a2/2+1+a4/4
(15)(x+1)(x-1)/1+(x+2)(x+3)/1+(x+3)(x+4)/1
(16)用简便方法计算:[3x2/2-x2+y2/2(3x2/X2+y2-x2-y20]÷x2/x2-y2
(17)己知abc=1 求ab+a+1/1+bc=b+1/1+ac+c+1/1的值
(18)4a3/3b2×a/2b÷(-a3/b3)
(19)(-x3/y3)4÷(x负2次方)3
(20)4x2-y2÷2x-y/4x2-4xy+y2
(21)4-4x=x2/2x2-8÷[(x+3)×x2-9/3-x]
(22)(a2-b2-c2+2bc)÷a+b+c/a+b-c
(23)x2+y2/(x2-y2)3÷(x2-2xy+y2)2×x2=2xy+y2/x4-y4
(24)己知x+y=6,xy=-2求(x4-y4)÷xy/x2+y2÷(6x-6y)
(25)己知a/1=x+y/2+y+a/3求4a=x2/3y的值
(26)己知a=-2/1,b=4/1,求(8a2-2b2)÷6a+3b/4a2b+4ab2=b2×(b-2a/b)2
呼呼～～终于打完了 高手请进来帮下忙噢～！分式,看上去有点难也
我要过程 不要只写答案的de先说谢谢啦 好的我给你加分～加多噢
好啦好啦100分就100分....~谁做出来..有过程加100分...快点呀..明天要就不行了