a)
2^5 : (2^3*2^0)=2^5:(2^3*1)=2^5:2^3=2^2=25
b)
(2^8:2^7)=2^1=2
c)
1,25^3*8^3=(1,25*8)^3=12^3=1728
d)
0,25^{17}*4^{17}=(\frac{1}{4})^{17}*4^{17}=(\frac{1}{4}*4)^{17}=1^{17}=1
e)
(2^5:2^3)^6 :2^{10}=2^2:2^{10}=2^{2-10}=2^{-8}=(\frac{1}{2})^8=\frac{1}{256}
f)
0,5^3*4^2=(\frac{1}{2})^3*16=\frac{1}{\not8^1}*\not16^2=2