计算:(1)4^24乘以(-0.25)^23-1=____.
问题描述:
计算:(1)4^24乘以(-0.25)^23-1=____.
(1)4^24乘以(-0.25)^23-1=____.
(2)若a^2n=3,则2a^6n-1=____.
答
(1)4^24乘以(-0.25)^23-1=4×(-4×0.25)^23-1=-4-1=-5
(2)若a^2n=3,则2a^6n-1=2×(a^2n)³-1=2×27-1=53