(1)x+yx-y•1(x+y)2(2)a-ba2+ab÷ab-a2a2b2-a 发布时间:2017-05-19 19:22 │ 来源:www.tikuol.com 题型:解答题 问题: (1)x+yx-y•1(x+y)2(2)a-ba2+ab÷ab-a2a2b2-a4(3)x2+7x-84x-x3•x2-43x+24(4)x2+2xy+y2xy-y2÷xy+y2x2-2xy+y2(5)x÷1x•x(6)x3+x21-x2÷x•1x(7)9a2b÷3a4b•4ab2(8)a-4a2+4a+4•a2+5a+6a2-a-2÷a+3a-2(9)x2+xyx2-xy÷(x-y)•x2-xyxy(10)(-a2b)2•(ba)3•(1ab)4(11)[(x-y)2x+y]3•(x2y2-x2)3(12)(x-1x2-x-2)2÷x2-2x+12-x÷(1x2+x)2.