{[(-2a^3)*(-2a^2)]^2+(2a^3a^2)^2}/(-1/2a^5)^2
=[(4a^5)^2+(2a^5)^2]/(1/4a^10)
=(16a^10+4a^10)/(1/4a^10)
=(20a^10)/(1/4a^10)
=20/(1/4)
=80
{[(-2a^3)*(-2a^2)]^2+(2a^3a^2)^2}/(-1/2a^5)^2
=[(4a^5)^2+(2a^5)^2]/(1/4a^10)
=(16a^10+4a^10)/(1/4a^10)
=(20a^10)/(1/4a^10)
=20/(1/4)
=80