Q
quyhop9x


cho a,b,c la cac so khong am thoa man a+b+c = 1006 chung minh
can(2012a+ (b-c)^2/2) + can(2012b+ (c-a)^2/2) + can(2012c+ (a-b)^2/2) \leq 2012can2
can(2012a+ (b-c)^2/2) + can(2012b+ (c-a)^2/2) + can(2012c+ (a-b)^2/2) \leq 2012can2