不要真的展開再整理 找這個數就行｜#數學3乘3 ｜曉戴數學 | 高中多項式
Synopsis
本篇題型屬於設計過的二次函數問題，利用平均數的觀念就可以很快速的解題，千萬別傻傻展開來呀！ #二次函數#數學3乘3 #曉戴 ...
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