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8. 若一元二次方程式9x2=4的兩根分別為 a 、 b ,其中 a >b ,則 a-b之值為何?(A) (B) (C) (D)
問題詳情
8. 若一元二次方程式9x2=4的兩根分別為 a 、 b ,其中 a >b ,則 a-b之值為何?
(A)
(B)
(C)
(D)
參考答案
答案:B
難度:
簡單
0.667
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