1个回答
2015-09-26
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(√6+4√3+3√2)/[(√6+√3)(√3+√2)]
= (√6+√3+3√3+3√2)/[(√6+√3)(√3+√2)]
=1/(√3+√2)+3/(√6+√3)
=√3-√2+(√6-√3)
=√6-√2(做这样的题要先观察题的特点,想方法把分母约分掉一部分,然后分母有理化,最后化简求值)
= (√6+√3+3√3+3√2)/[(√6+√3)(√3+√2)]
=1/(√3+√2)+3/(√6+√3)
=√3-√2+(√6-√3)
=√6-√2(做这样的题要先观察题的特点,想方法把分母约分掉一部分,然后分母有理化,最后化简求值)
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