2log(2)根号30-log(2)3-log(2)5 求值

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2log(2)根号30-log(2)3-log(2)5求值2log(2)根号30-log(2)3-log(2)5求值2log(2)根号30-log(2)3-log(2)5求值2log(2)根号30-l

2log(2)根号30-log(2)3-log(2)5 求值
2log(2)根号30-log(2)3-log(2)5 求值

2log(2)根号30-log(2)3-log(2)5 求值
2log(2)根号30-log(2)3-log(2)5
=log₂(√30)²-log₂(3×5)
=log₂30-log₂15
=log₂(30/15)
=log₂2
=1