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已知,化简二次根式的正确结果为()A.B.C.D.-九年级数学
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计算:.-八年级数学
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(本小题满分12分)(1)(2)-八年级数学
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(10分)计算:(每小题5分)(1)(2)(﹣)÷-九年级数学
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已知,那么可化简为.-九年级数学
题目简介
计算:=▲.-八年级数学
题目详情
答案
解:原式=2
合并同类二次根式实际是把同类二次根式的系数相加,而根指数与被开方数都不变