(2^99-2^98)/(2^101-2^100)=2^98(2-1)/2^100(2-1)=2^(98-100)=2^(-2)=1/4
(0.04)^2005×[(-5)^2005]²=(0.04)^2005×[(-5)²]^2005=(0.04×25)^2005=1^2005=1
(2^99-2^98)/(2^101-2^100)=2^98(2-1)/2^100(2-1)=2^(98-100)=2^(-2)=1/4
(0.04)^2005×[(-5)^2005]²=(0.04)^2005×[(-5)²]^2005=(0.04×25)^2005=1^2005=1