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当x=什么时，最简二次根式-4√3x+5与3√2x+7能够合并

2025-03-28 18:35:02

推荐回答（1个）

回答1：

当x=0时，最简二次根式-4√3x+5与3√2x+7能够合并
若a,b为有理数，且根号8 加根号18加根号八分之一=a+b倍的根号2，则a=?b=？
√8+√18+√1/8
=2√2+3√2+√2/4
=21√2/4
a=0,b=21/4

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