本文目錄一覽1，初二數(shù)學2，數(shù)學初二數(shù)學3，初二數(shù)學4，初二年級數(shù)學5，初二年級數(shù)學6，數(shù)學初二定義7，初二數(shù)學1，初二數(shù)學1):5M2):（3根號10）/23）根號77或根號522，數(shù)學初二數(shù)學1/y-1/x=(x-y)/xy因為xy=x-y，所以原式=xy/xy=1xy=x-y1=1/Y-1/X=(x-y)/xy=1-13，初二數(shù)學∵0<x<2，0<2x<4?！鄖=|2x+b|<1，∴-1<2x+b<1，-1-b<2x<1-b?！?≤-1-b<...