Odpowiedź:
I.) 9[tex]x^{2}[/tex] - 18 = 9[tex]x^{2}[/tex] - 3x
3x = 18
x = 6
(F)
II.) 3[tex]x^{2}[/tex] + 2x + 1 = 3[tex]x^{2}[/tex] - 3x
5x = -1 I :-1
-5x = 1
(P)
9(x^2-2)=3x(3x-1)
9x^2-18=9x^2-3x
3x=18
x=6
F
3x^2+2x+1=3x(x-1)
3x^2+2x+1=3x^2-3x
2x+1=-3x
1= -5x
P
