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不可以; √(a²;+b²;)≠√a²;+√b²;; 請採納 如果你認可我的回答,敬請及時採納, ~如果你認可我的回答,請及時點擊【採納為滿意回答】按鈕 ~~手機提問的朋友在用戶端右上角評估點【滿意】即可. ~你的採納是我前進的動力 ~~O(∩_∩)O,記得好評和採納,互相幫助
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