4的x次方-6*（2的x次方）-16=0
设2^x=m>0
则
m²-6m-16=0
即(m-8)(m+2)=0
所以：m=8
即2^x=8
故x=3
解方程：4的x次方-6*（2的x次方）-16=0
解方程：4的x次方-6*（2的x次方）-16=0
求过程!
求过程!
数学人气：649 ℃时间：2019-12-19 10:05:07
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