0.25^9*64^3*(-1/2)^-2*7^0=?
问题描述:
0.25^9*64^3*(-1/2)^-2*7^0=?
答
0.25^9*64^3*(-1/2)^(-2)*7^0
=(1/4)^9*(4^3)^3*4*1
=(1/4)^9*4^9*4*1
=(1/4*4)^9*4
=4