根号20+根号5除以根号5再-2等于几

很简单，要的是过程，不是只有得数

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根号20+根号5除以悄闷则根罩顷号5再-2
=(根号20+根号5)/根号5-2
=(根号(4*5)+根号5)/根号启棚5-2
=(2根号(5)+根号5)/根号5-2
=3根号5/根号5-2
=3-2=1

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(√20＋√5)/√5 -2
=(2√5+√5)/√5-2
=3-2
=1

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