Question

[Bùi Đạt Khôi]

Tim tat ca cac so thuc bac x thoa man 

a)(2x-1)^2+(x-1)^3=3x+6

b) x+1= can bac x+3 ( ko viet dc can bac hi hi)

c)2x^2+1=5 . can bac x^2+1-4