二次根式除法,求大虾来解答清楚(1)√4a^3 b÷(-√a/4b)= -√4a^3 b÷a/4b =√4a^3 b×a/4b = √16a^2 b^2 = -4ab √16a^2 b^2 开出来不是应该等于-4 为什么等于 -4ab (2)√12a^2 =2√3a √12a^2开出来怎么还有a呢?
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![二次根式除法,求大虾来解答清楚(1)√4a^3 b÷(-√a/4b)= -√4a^3 b÷a/4b =√4a^3 b×a/4b = √16a^2 b^2 = -4ab √16a^2 b^2 开出来不是应该等于-4 为什么等于 -4ab (2)√12a^2 =2√3a √12a^2开出来怎么还有a呢?](/uploads/image/z/3926598-6-8.jpg?t=%E4%BA%8C%E6%AC%A1%E6%A0%B9%E5%BC%8F%E9%99%A4%E6%B3%95%2C%E6%B1%82%E5%A4%A7%E8%99%BE%E6%9D%A5%E8%A7%A3%E7%AD%94%E6%B8%85%E6%A5%9A%281%29%E2%88%9A4a%5E3+b%C3%B7%EF%BC%88-%E2%88%9Aa%2F4b%29%3D+-%E2%88%9A4a%5E3+b%C3%B7a%2F4b+%3D%E2%88%9A4a%5E3+b%C3%97a%2F4b+%3D+%E2%88%9A16a%5E2+b%5E2+%3D+-4ab+%E2%88%9A16a%5E2+b%5E2+%E5%BC%80%E5%87%BA%E6%9D%A5%E4%B8%8D%E6%98%AF%E5%BA%94%E8%AF%A5%E7%AD%89%E4%BA%8E-4+%E4%B8%BA%E4%BB%80%E4%B9%88%E7%AD%89%E4%BA%8E+-4ab+%EF%BC%882%EF%BC%89%E2%88%9A12a%5E2+%3D2%E2%88%9A3a+%E2%88%9A12a%5E2%E5%BC%80%E5%87%BA%E6%9D%A5%E6%80%8E%E4%B9%88%E8%BF%98%E6%9C%89a%E5%91%A2%3F)
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