4的24次方 乘以(-0.125)23次方-1

问题描述:

4的24次方 乘以(-0.125)23次方-1

4的24次方 乘以(-0.125)23次方-1
=4^24x(-1/8)^23-1
=4x(4x-1/8)^23-1
=4x(-1/2)^23-1
=-1/2^21-1
=-(1+1/2^21)