問題詳情
1.設直角坐標平面上兩點 
，且 
，試求x之值
(A)x=5或-1
(B)x=6或-4
(C)x=12或-9
(D)x=-3或10。
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增
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