x^(-a)=1/x^a
所以（-0.1）^-10 (-1/10)^-2
=1/(-0.1)^10*1/(-1/10)^2
=1/0.1^10*1/(1/10^2)
=1/(1/10)^10*10^2
=10^10*10^2
=10^12