✔ 最佳答案
您好,我是 lop,高興能解答您的問題。
A 的數值是 √210,但有無限種不同的填法:
√210 × √210 = 210
(√70×√3) × (√70×√3) = 210
(√10×√21) × (√10×√21) = 210
(√2310÷√11) × (√2310÷√11) = 210
... ...
2011-11-11 17:27:05 補充:
Thank you for reminding
2011-11-11 17:27:23 補充:
A = √210 or - √210
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