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