1.16的-3⼀4次方是多少?2.-(64的-2⼀3次方)

2024-12-14 13:05:20
推荐回答(3个)
回答1:

16的-3/4次方是多少
16^(-3/4)=[16^(1/4)]^(-3)=2^(-3)=1/[2^3]=1/8

-(64的-2/3次方)
=-[64^(1/3)]^(-2)
=-[4]^(-2)
=-[1/(4^2)]
-1/16

回答2:

1.16的-3/4次方=(2^4)^(-3/4)=2^(-3)=1/8
2.-(64的-2/3次方) =-{2^[6*(-2/3)]}=-{2^[-4]}=-1/16

回答3:

1.1/8
2.-1/16