2a(b-c)-b(2a-c)+c(2a-3b)
=2ab-2ac-2ab+bc+2ac-3bc
=-2bc
-2a^(0.5ab+b^)-5a(a^b-ab^)
=-a^3b-2a^2b^2-5a^3b+5a^2b^2
=-6a^3b+3a^2b^2
=-3a^2b(2a-b)
2a(b-c)-b(2a-c)+c(2a-3b)
=2ab-2ac-2ab+bc+2ac-3bc
=-2bc
-2a^(0.5ab+b^)-5a(a^b-ab^)
=-a^3b-2a^2b^2-5a^3b+5a^2b^2
=-6a^3b+3a^2b^2
=-3a^2b(2a-b)