1) x(x-8)=0x = 0 или x-8 = 0x = 0 или x = 8
2) z^2 - 3z = 0z(z - 3) = 0z = 0 или z = 3
3) -2x^2 + 13x = 0x(-2x + 13) = 0x = 0 или -2x + 13 = 0x = 0 или x = 13/2
4) (y-5)(y+11) = 0y = 5 или y = -11
5) t^2 + 12t = 0t(t + 12) = 0t = 0 или t = -12
6) -x^2 + 25 = 0-x^2 = -25x^2 = 25x = ±√25x = ±5
1) x(x-8)=0
x = 0 или x-8 = 0
x = 0 или x = 8
2) z^2 - 3z = 0
z(z - 3) = 0
z = 0 или z = 3
3) -2x^2 + 13x = 0
x(-2x + 13) = 0
x = 0 или -2x + 13 = 0
x = 0 или x = 13/2
4) (y-5)(y+11) = 0
y = 5 или y = -11
5) t^2 + 12t = 0
t(t + 12) = 0
t = 0 или t = -12
6) -x^2 + 25 = 0
-x^2 = -25
x^2 = 25
x = ±√25
x = ±5