Rozwiąż równania
a) 2x(2x – 4)(x + 2)(d – x) = 0
b) – m[tex]x^{2}[/tex] (2– 3x)(x – 4)(x + 2) = 0
c) ([tex]x^{2}[/tex]– 4)([tex]x^{2}[/tex]+ 5x + 6) = 0
d) 2[tex]x^{2}[/tex](2x – 4)(x – d)([tex]x^{2}[/tex]+ 9) = 0