Решите уравнение 3х(х-2)(3х-1)-х(3х-2)"2=1-9х"2

1. (3*x-6)*x*(3*x-1)-x*(3*x-2)^2-1+9*x^2=0
2. (3*x^2-6*x)*(3*x-1)-x*(3*x-2)^2-1+9*x^2=0
3. 9*x^3-21*x^2+6*x-x*(3*x-2)^2-1+9*x^2=0
4. 9*x^3-21*x^2+6*x-x*(9*x^2-12*x+4)-1+9*x^2=0
5. 9*x^3-21*x^2+6*x-(x^3*9-x^2*12+x*4)-1+9*x^2=0
6. 9*x^3-21*x^2+6*x-x^3*9+x^2*12-x*4-1+9*x^2=0
7. -21*x^2+6*x+x^2*12-x*4-1+9*x^2=0
8. -9*x^2+6*x-x*4-1+9*x^2=0
9. -9*x^2+2*x-1+9*x^2=0
10. 2x-1=0
11. x=1/2=0.5