-10(-A^3 B^2 C)^2*1/5A*(BC)^3-(2ABC)^3*(-A^2B^2C)^2
=-10A^6B^4C^2*(1/5AB^3C^3)-(8A^3B^3C^3)(A^4B^4C^2)
=-2A^7B^7C^5-8A^7B^7C^5
=-10A^7B^7C^5
a=-5,b=0.5,c=2代入
原式=-10*(-5*0.5)^7*2^5
=195312.5
-10(-A^3 B^2 C)^2*1/5A*(BC)^3-(2ABC)^3*(-A^2B^2C)^2
=-10A^6B^4C^2*(1/5AB^3C^3)-(8A^3B^3C^3)(A^4B^4C^2)
=-2A^7B^7C^5-8A^7B^7C^5
=-10A^7B^7C^5
a=-5,b=0.5,c=2代入
原式=-10*(-5*0.5)^7*2^5
=195312.5