Zadanie 2 Rozwiąż równanie x^2(x-2)-9(x-2)=0.
x^2(x-2)-9(x-2)=0\\ (x-2)(x^2-9)=0\\ (x-2)(x^2-3^2)=0\\ (x-2)(x-3)(x+3)=0\\ x-2=0 \vee x-3=0\vee x+3=0\\ x_1=2, \ x_2 =3, \ x_3=-3