小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com专题03二次根式、分式【中考考向导航】目录【直击中考】.....................................................................................................................................................1【考向一二次根式有意义的条件】................................................................................................................1【考向二二次根式的运算】............................................................................................................................2【考向三分式有意义的条件】........................................................................................................................5【考向四分式的值为零及求分式的值】........................................................................................................6【考向五分式的化简运算】............................................................................................................................8【考向六分式的化简求值】..........................................................................................................................11【考向七分式化简中错解复原问题】..........................................................................................................15【直击中考】【考向一二次根式有意义的条件】例题:(2022·北京·统考中考真题)若在实数范围内有意义,则实数x的取值范围是___________.【变式训练】1.(2022·江苏徐州·统考中考真题)要使得式子有意义,则的取值范围是()A.B.C.D.2.(2022·湖南湘西·统考中考真题)要使二次根式有意义,则x的取值范围是()A.x>2B.x<2C.x≤2D.x≥23.(2022·广西河池·统考中考真题)若二次根式有意义,则a的取值范围是_____.4.(2022·广西贵港·中考真题)若在实数范围内有意义,则实数x的取值范围是________.【考向二二次根式的运算】例题:(2022·甘肃武威·统考中考真题)计算:.【变式训练】1.(2022·贵州六盘水·统考中考真题)计算:__________.小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com2.(2022·山西·中考真题)计算的结果是________.3.(2022·黑龙江哈尔滨·统考中考真题)计算的结果是___________.4.(2022·山东泰安·统考中考真题)计算:__________.5.(2022·广西河池·统考中考真题)计算:.6.(2022·辽宁沈阳·统考中考真题)计算:.7.(2022·四川广元·统考中考真题)计算:2sin60°|﹣﹣2|+(π﹣)0﹣+(﹣)﹣2.【考向三分式有意义的条件】例题:(2022·山东菏泽·统考中考真题)若在实数范围内有意义,则实数x的取值范围是________.【变式训练】1.(2022·湖北黄石·统考中考真题)函数的自变量x的取值范围是()A.且B.且C.D.且2.(2022·辽宁丹东·统考中考真题)在函数y=中,自变量x的取值范围是()A.x≥3B.x≥﹣3C.x≥3且x≠0D.x≥﹣3且x≠03.(2022·江苏南通·统考中考真题)分式有意义,则x应满足的条件是___________.4.(2022·青海·统考中考真题)若式子有意义,则实数x的取值范围是______.小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com5.(2022·内蒙古包头·中考真题)若代数式在实数范围内有意义,则x的取值范围是___________.【考向四分式的值为零及求分式的值】例题:(2022·湖南郴州·统考中考真题)若,则________.【变式训练】1.(2022·广西·统考中考真题)当______时,分式的值为零.2.(2022·浙江湖州·统考中考真题)当a=1时,分式的值是______.3.(2022·山东菏泽·统...