我想問(-2的x次方)³×4的x次方再/8的x次方等於什麼?
回答 (2)
2016-05-31 11:45 pm
Sol
(－2^x)^3*(4^x)]/(8^x)]
=－(2^x)^3*(2^2)^x/(2^3)^x
=－2^(3x)*2^(2x)/2^(3x)
=－2^(3x+2x－3x)
=－2^(2x)
(－2^x)^3*(4^x)]/(8^x)]
=－(2^x)^3*(2^2)^x/(2^3)^x
=－2^(3x)*2^(2x)/2^(3x)
=－2^(3x+2x－3x)
=－2^(2x)
2016-07-03 7:38 am
[(-2^x)^3](4^x)/(8^x)
=[-2^(3x)][2^(2x)]/[2^(3x)]
=-2^(2x)
=-4^x
=[-2^(3x)][2^(2x)]/[2^(3x)]
=-2^(2x)
=-4^x
收錄日期: 2021-04-18 14:55:03
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https://hk.answers.yahoo.com/question/index?qid=20160531062946AARPr1w