八的673次方乘以0.5的2020次方?

2024-11-27 10:35:05
推荐回答(3个)
回答1:

8^673×0.5^2020
=(2³)^673
×(1/2)^2020
=2^2019×2^(–2020)
=2^(2019–2020)
=2^(–1)
=1/2

回答2:

8^673 × 0.5^2020
=2^2019 × 0.5^2020
=2^2019 ×0.5^2019×0.5
=(2×0.5)^2019×0.5
=1×0.5
=0.5

回答3:

8的673次方 x0.5的2020次方
=(2³)的673次方 x0.5的2020次方
=2的2019次方 x2的-2020次方
=2的-1次方
=1/2