Tìm x

D, (4x+3)^2 = (9x-2) (x+3)

E.(4x+3)^2 = (8x-2) . (2x+1)

F. ( 3x-1)^2 = ((x-4).(9x-1)  

G. (5x-1)^2 = (5x-2) (5x+2)