问2道初二的分式加减法题要过程（1）x+y+2y^2/x-y(2)(3a^2/a+b)^3(a^2-b^2)除以（b-a/a+b）^2
<p>问题：问2道初二的分式加减法题要过程（1）x+y+2y^2/x-y(2)(3a^2/a+b)^3(a^2-b^2)除以（b-a/a+b）^2<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">孙启彬的回答：<div class="content-b">网友采纳 （1）x+y+2y^2/(x-y) =[(x+y)(x-y)+2y^2]/(x-y) =(x^2+y^2)/(x-y) (2)(3a^2/a+b)^3(a^2-b^2)除以（b-a/a+b）^2 =(27a^6)/(a+b)^3*(a+b)(a-b)*(a+b)^2/(a-b)^2 =27a^6/(a-b)
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