x? -4x+4=3
(x-2)? =3
(2)
x? -x+ 1/4=6+ 1/4
(x- 1/2)? =25/4
(3)
3(x? +2x/3+ 1/9)- 1/3=4
3(x? +2x/3+ 1/9)= 1/3+4
3(x? + 1/3)? = 13/3
(x+ 1/3)? = 13/9