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9. 已知 243=3a, 128=2b,則 a-b2=? (A)2 (B)-44 (C)-2 (D)44。
問題詳情
9. 已知 243=3a, 128=2b,則 a-b2=?
(A)2
(B)-44
(C)-2
(D)44。
參考答案
答案:B
難度:
計算中
-1
書單:
沒有書單,新增
用户評論
【用戶】
Fly L
【年級】小四上
【評論內容】243=3x81=3x9x9=3x(3x3)☆(3☆3)=35128=2☆...
【用戶】
Fly L
【年級】高一上
【評論內容】243=3x81=3x9x9=3x(3x3)☆(3☆3)=35128=2☆...
上一篇 :
8. 計算|-17+3|-5+(-9 )=? (A)24 (B)18 (C)0 (D)-14。
下一篇 :
10. 觀察右列的式子規律: 22-12=2×2-1, 32-22=2×3-1, 42-32=2×4-1, 52-42=2×5-1,因而推理 572-552=?(A)111 (B)113 (C)220
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