1.(负三分之二)^2005 乘 1.5^2005
=[(-2/3)×3/2]^2005
=(-1)^2005
=-1
2.8^8 乘 (负四分之一)^12
=8^8×(-1/4)^8×(-1/4)^4
=[8×(-1/4)]^8×[(-1/2)^2]^4
=(-2)^8×(-1/2)^8
=[(-2)×(-1/2)]^8
=1
3.(负三)^5 乘 (负三分之二)^5 乘 (负五)^6
=[(-3)×(-2/3)×(-5)]^5×(-5)^1
=(-10)^5×(-5)^1
=500000
1.(负三分之二)^2005 乘 1.5^2005
=[(-2/3)×3/2]^2005
=(-1)^2005
=-1
2.8^8 乘 (负四分之一)^12
=8^8×(-1/4)^8×(-1/4)^4
=[8×(-1/4)]^8×[(-1/2)^2]^4
=(-2)^8×(-1/2)^8
=[(-2)×(-1/2)]^8
=1
3.(负三)^5 乘 (负三分之二)^5 乘 (负五)^6
=[(-3)×(-2/3)×(-5)]^5×(-5)^1
=(-10)^5×(-5)^1
=500000