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統計: A(24), B(57), C(189), D(28), E(0) #598180

詳解 (共 1 筆)

#874405
原式=(log4  9+log4  9)(log9   16+log9   2)
=(log4   81)(log9    32)
=(log2   9)(log9    32)
=log2    32
=5

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