求:(16¾)²-(13¼)²=?(16¾)²-(13¼)²=?
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求:(16¾)²-(13¼)²=?(16¾)²-(13¼)²=?
求:(16¾)²-(13¼)²=?
(16¾)²-(13¼)²=?
求:(16¾)²-(13¼)²=?(16¾)²-(13¼)²=?
(16¾)²-(13¼)²
=﹙2³﹚²-13½
=8²-√13
=16-√13