(√2+1)^(-1)
=1/(√2+1)
=(√2-1)/[(√2+1)（√2-1)]
=（√2-1)/[(√2)^2-1]
=（√2-1)/(2-1)
=√2-1
√2-1=(√2+1)^(-1)
（√2-1）等于（√2+1）的-1次方,请帮忙解释一下
（√2-1）等于（√2+1）的-1次方,请帮忙解释一下
感谢!
感谢!
数学人气：702 ℃时间：2020-03-31 13:43:01
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