Odpowiedź :
a)
[tex]x^2-3x=0\\x(x-3)=0\\x=0 \vee x=3[/tex]
b)
[tex]5x^2+12x=0\\x(5x+12)=0\\x=0 \vee x=-\dfrac{12}{5}[/tex]
c)
[tex]6x^2-216x=0\\6x(x-36)=0\\x=0 \vee x=36[/tex]
zad.a
x² - 3x = 0
x × ( x- 3) = 0
x = 0 ∨ x - 3 = 0
x = 0 ∨ x = 3
zad.b
5x² + 12x = 0
x × ( 5x + 12 ) = 0
x = 0 ∨ 5x + 12 = 0
x = 0 ∨ x = -2,4
zad.c
6x² - 216x = 0 /÷6
x² - 36x = 0
x × ( x - 36) =0
x =0 ∨ x - 36 =0
x = 0 ∨ x = 36