Odpowiedź:
Zad 2.
a) [tex]W(x) = 6x^3-54x^2+18x = 6x(x^2-9x+3)[/tex]
b) [tex]W(x) = 100x^2-81 = (10x)^2 - 9^2 = (10x-9)(10x+9)[/tex]
c) [tex]W(x) = 20x^5 - 45x^3 = 5x^3(4x^2-9) = 5x^3(2x-3)(2x+3)[/tex]
Zad 3.
[tex]x^2-5x+4 = (x-1)(x-4)[/tex]
Rozwiązania: [tex]x=5 \vee x=-3 \vee x=1 \vee x=4[/tex]
