根号8减根号4等于多少

Question

如题所述

Answer 1

根号8减根号4等于

2倍根号2-2

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Answer 2

√8-√4
=2√2-2
=0.828427

Answer 3

√8-√4
=2√2-2

Answer 4

根号8减根号4等于2√2-2

Answer 5

√8-√4
=2√2-2